CVE-2020-26976

mediumpriority · track · 27EPSS 0.016 · 76 %ileEUUS
grimoire priorityP3 · Track
Exploitable?
—
no known exploitation
Likely / severe?
1.64% (76th) EPSS
CVSS 4.3 · medium
Is it mine?
33 products
Check your exposure
Who says so?
4 sources
cnnvd · enisa_euvd · nvd · redhat_csaf

EPSS · scored 2026-10-27

When a HTTPS pages was embedded in a HTTP page, and there was a service worker registered for the former, the service worker could have intercepted the request for the secure page despite the iframe not being a secure context due to the (insecure) framing. This vulnerability affects Firefox < 84.

01

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

  • Fixedfirefox-0:78.7.0-2.el8_1.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.1)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 After installing the update, Firefox must be restarted for the changes to take effect.

    https://access.redhat.com/errata/RHSA-2021:0285
  • Fixedfirefox-0:78.7.0-2.el8_1.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.1)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 After installing the update, Firefox must be restarted for the changes to take effect.

    https://access.redhat.com/errata/RHSA-2021:0285
  • Fixedfirefox-0:78.7.0-2.el8_1.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.1)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 After installing the update, Firefox must be restarted for the changes to take effect.

    https://access.redhat.com/errata/RHSA-2021:0285
  • Fixedfirefox-0:78.7.0-2.el8_1.src as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.1)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 After installing the update, Firefox must be restarted for the changes to take effect.

    https://access.redhat.com/errata/RHSA-2021:0285
  • Fixedfirefox-0:78.7.0-2.el8_1.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.1)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 After installing the update, Firefox must be restarted for the changes to take effect.

    https://access.redhat.com/errata/RHSA-2021:0285
  • Fixedfirefox-debuginfo-0:78.7.0-2.el8_1.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.1)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 After installing the update, Firefox must be restarted for the changes to take effect.

    https://access.redhat.com/errata/RHSA-2021:0285
  • Fixedfirefox-debuginfo-0:78.7.0-2.el8_1.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.1)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 After installing the update, Firefox must be restarted for the changes to take effect.

    https://access.redhat.com/errata/RHSA-2021:0285
  • Fixedfirefox-debuginfo-0:78.7.0-2.el8_1.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.1)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 After installing the update, Firefox must be restarted for the changes to take effect.

    https://access.redhat.com/errata/RHSA-2021:0285
  • Fixedfirefox-debuginfo-0:78.7.0-2.el8_1.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.1)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 After installing the update, Firefox must be restarted for the changes to take effect.

    https://access.redhat.com/errata/RHSA-2021:0285
  • Fixedfirefox-debugsource-0:78.7.0-2.el8_1.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.1)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 After installing the update, Firefox must be restarted for the changes to take effect.

    https://access.redhat.com/errata/RHSA-2021:0285
  • Fixedfirefox-debugsource-0:78.7.0-2.el8_1.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.1)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 After installing the update, Firefox must be restarted for the changes to take effect.

    https://access.redhat.com/errata/RHSA-2021:0285
  • Fixedfirefox-debugsource-0:78.7.0-2.el8_1.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.1)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 After installing the update, Firefox must be restarted for the changes to take effect.

    https://access.redhat.com/errata/RHSA-2021:0285
  • Fixedfirefox-debugsource-0:78.7.0-2.el8_1.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.1)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 After installing the update, Firefox must be restarted for the changes to take effect.

    https://access.redhat.com/errata/RHSA-2021:0285
  • Fixedfirefox-0:78.7.0-2.el8_3.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 After installing the update, Firefox must be restarted for the changes to take effect.

    https://access.redhat.com/errata/RHSA-2021:0288
  • Fixedfirefox-0:78.7.0-2.el8_3.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 After installing the update, Firefox must be restarted for the changes to take effect.

    https://access.redhat.com/errata/RHSA-2021:0288
  • Fixedfirefox-0:78.7.0-2.el8_3.s390x as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 After installing the update, Firefox must be restarted for the changes to take effect.

    https://access.redhat.com/errata/RHSA-2021:0288
  • Fixedfirefox-0:78.7.0-2.el8_3.src as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 After installing the update, Firefox must be restarted for the changes to take effect.

    https://access.redhat.com/errata/RHSA-2021:0288
  • Fixedfirefox-0:78.7.0-2.el8_3.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 After installing the update, Firefox must be restarted for the changes to take effect.

    https://access.redhat.com/errata/RHSA-2021:0288
  • Fixedfirefox-debuginfo-0:78.7.0-2.el8_3.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 After installing the update, Firefox must be restarted for the changes to take effect.

    https://access.redhat.com/errata/RHSA-2021:0288
  • Fixedfirefox-debuginfo-0:78.7.0-2.el8_3.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 After installing the update, Firefox must be restarted for the changes to take effect.

    https://access.redhat.com/errata/RHSA-2021:0288
  • Fixedfirefox-debuginfo-0:78.7.0-2.el8_3.s390x as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 After installing the update, Firefox must be restarted for the changes to take effect.

    https://access.redhat.com/errata/RHSA-2021:0288
  • Fixedfirefox-debuginfo-0:78.7.0-2.el8_3.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 After installing the update, Firefox must be restarted for the changes to take effect.

    https://access.redhat.com/errata/RHSA-2021:0288
  • Fixedfirefox-debugsource-0:78.7.0-2.el8_3.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 After installing the update, Firefox must be restarted for the changes to take effect.

    https://access.redhat.com/errata/RHSA-2021:0288
  • Fixedfirefox-debugsource-0:78.7.0-2.el8_3.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 After installing the update, Firefox must be restarted for the changes to take effect.

    https://access.redhat.com/errata/RHSA-2021:0288
  • Fixedfirefox-debugsource-0:78.7.0-2.el8_3.s390x as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 After installing the update, Firefox must be restarted for the changes to take effect.

    https://access.redhat.com/errata/RHSA-2021:0288
  • Fixedfirefox-debugsource-0:78.7.0-2.el8_3.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 After installing the update, Firefox must be restarted for the changes to take effect.

    https://access.redhat.com/errata/RHSA-2021:0288
  • Fixedfirefox-0:78.7.0-2.el8_2.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 After installing the update, Firefox must be restarted for the changes to take effect.

    https://access.redhat.com/errata/RHSA-2021:0289
  • Fixedfirefox-0:78.7.0-2.el8_2.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 After installing the update, Firefox must be restarted for the changes to take effect.

    https://access.redhat.com/errata/RHSA-2021:0289
  • Fixedfirefox-0:78.7.0-2.el8_2.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 After installing the update, Firefox must be restarted for the changes to take effect.

    https://access.redhat.com/errata/RHSA-2021:0289
  • Fixedfirefox-0:78.7.0-2.el8_2.src as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 After installing the update, Firefox must be restarted for the changes to take effect.

    https://access.redhat.com/errata/RHSA-2021:0289
  • Fixedfirefox-0:78.7.0-2.el8_2.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 After installing the update, Firefox must be restarted for the changes to take effect.

    https://access.redhat.com/errata/RHSA-2021:0289
  • Fixedfirefox-debuginfo-0:78.7.0-2.el8_2.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 After installing the update, Firefox must be restarted for the changes to take effect.

    https://access.redhat.com/errata/RHSA-2021:0289
  • Fixedfirefox-debuginfo-0:78.7.0-2.el8_2.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 After installing the update, Firefox must be restarted for the changes to take effect.

    https://access.redhat.com/errata/RHSA-2021:0289
  • Fixedfirefox-debuginfo-0:78.7.0-2.el8_2.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 After installing the update, Firefox must be restarted for the changes to take effect.

    https://access.redhat.com/errata/RHSA-2021:0289
  • Fixedfirefox-debuginfo-0:78.7.0-2.el8_2.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 After installing the update, Firefox must be restarted for the changes to take effect.

    https://access.redhat.com/errata/RHSA-2021:0289
  • Fixedfirefox-debugsource-0:78.7.0-2.el8_2.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 After installing the update, Firefox must be restarted for the changes to take effect.

    https://access.redhat.com/errata/RHSA-2021:0289
  • Fixedfirefox-debugsource-0:78.7.0-2.el8_2.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 After installing the update, Firefox must be restarted for the changes to take effect.

    https://access.redhat.com/errata/RHSA-2021:0289
  • Fixedfirefox-debugsource-0:78.7.0-2.el8_2.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 After installing the update, Firefox must be restarted for the changes to take effect.

    https://access.redhat.com/errata/RHSA-2021:0289
  • Fixedfirefox-debugsource-0:78.7.0-2.el8_2.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 After installing the update, Firefox must be restarted for the changes to take effect.

    https://access.redhat.com/errata/RHSA-2021:0289
  • Fixedfirefox-0:78.7.0-2.el7_9.i686 as a component of Red Hat Enterprise Linux Client Optional (v. 7)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 After installing the update, Firefox must be restarted for the changes to take effect.

    https://access.redhat.com/errata/RHSA-2021:0290
  • Fixedfirefox-0:78.7.0-2.el7_9.i686 as a component of Red Hat Enterprise Linux Server Optional (v. 7)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 After installing the update, Firefox must be restarted for the changes to take effect.

    https://access.redhat.com/errata/RHSA-2021:0290
  • Fixedfirefox-0:78.7.0-2.el7_9.i686 as a component of Red Hat Enterprise Linux Workstation Optional (v. 7)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 After installing the update, Firefox must be restarted for the changes to take effect.

    https://access.redhat.com/errata/RHSA-2021:0290
  • Fixedfirefox-0:78.7.0-2.el7_9.ppc64 as a component of Red Hat Enterprise Linux Server (v. 7)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 After installing the update, Firefox must be restarted for the changes to take effect.

    https://access.redhat.com/errata/RHSA-2021:0290
  • Fixedfirefox-0:78.7.0-2.el7_9.ppc64le as a component of Red Hat Enterprise Linux Server (v. 7)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 After installing the update, Firefox must be restarted for the changes to take effect.

    https://access.redhat.com/errata/RHSA-2021:0290
  • Fixedfirefox-0:78.7.0-2.el7_9.s390x as a component of Red Hat Enterprise Linux Server (v. 7)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 After installing the update, Firefox must be restarted for the changes to take effect.

    https://access.redhat.com/errata/RHSA-2021:0290
  • Fixedfirefox-0:78.7.0-2.el7_9.src as a component of Red Hat Enterprise Linux Client (v. 7)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 After installing the update, Firefox must be restarted for the changes to take effect.

    https://access.redhat.com/errata/RHSA-2021:0290
  • Fixedfirefox-0:78.7.0-2.el7_9.src as a component of Red Hat Enterprise Linux Server (v. 7)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 After installing the update, Firefox must be restarted for the changes to take effect.

    https://access.redhat.com/errata/RHSA-2021:0290
  • Fixedfirefox-0:78.7.0-2.el7_9.src as a component of Red Hat Enterprise Linux Workstation (v. 7)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 After installing the update, Firefox must be restarted for the changes to take effect.

    https://access.redhat.com/errata/RHSA-2021:0290
  • Fixedfirefox-0:78.7.0-2.el7_9.x86_64 as a component of Red Hat Enterprise Linux Client (v. 7)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 After installing the update, Firefox must be restarted for the changes to take effect.

    https://access.redhat.com/errata/RHSA-2021:0290
  • Fixedfirefox-0:78.7.0-2.el7_9.x86_64 as a component of Red Hat Enterprise Linux Server (v. 7)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 After installing the update, Firefox must be restarted for the changes to take effect.

    https://access.redhat.com/errata/RHSA-2021:0290
  • Fixedfirefox-0:78.7.0-2.el7_9.x86_64 as a component of Red Hat Enterprise Linux Workstation (v. 7)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 After installing the update, Firefox must be restarted for the changes to take effect.

    https://access.redhat.com/errata/RHSA-2021:0290
  • Fixedfirefox-debuginfo-0:78.7.0-2.el7_9.ppc64 as a component of Red Hat Enterprise Linux Server (v. 7)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 After installing the update, Firefox must be restarted for the changes to take effect.

    https://access.redhat.com/errata/RHSA-2021:0290
  • Fixedfirefox-debuginfo-0:78.7.0-2.el7_9.ppc64le as a component of Red Hat Enterprise Linux Server (v. 7)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 After installing the update, Firefox must be restarted for the changes to take effect.

    https://access.redhat.com/errata/RHSA-2021:0290
  • Fixedfirefox-debuginfo-0:78.7.0-2.el7_9.s390x as a component of Red Hat Enterprise Linux Server (v. 7)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 After installing the update, Firefox must be restarted for the changes to take effect.

    https://access.redhat.com/errata/RHSA-2021:0290
  • Fixedfirefox-debuginfo-0:78.7.0-2.el7_9.x86_64 as a component of Red Hat Enterprise Linux Client (v. 7)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 After installing the update, Firefox must be restarted for the changes to take effect.

    https://access.redhat.com/errata/RHSA-2021:0290
  • Fixedfirefox-debuginfo-0:78.7.0-2.el7_9.x86_64 as a component of Red Hat Enterprise Linux Server (v. 7)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 After installing the update, Firefox must be restarted for the changes to take effect.

    https://access.redhat.com/errata/RHSA-2021:0290
  • Fixedfirefox-debuginfo-0:78.7.0-2.el7_9.x86_64 as a component of Red Hat Enterprise Linux Workstation (v. 7)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 After installing the update, Firefox must be restarted for the changes to take effect.

    https://access.redhat.com/errata/RHSA-2021:0290
  • Fixedthunderbird-0:78.7.0-1.el7_9.ppc64le as a component of Red Hat Enterprise Linux Server Optional (v. 7)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 All running instances of Thunderbird must be restarted for the update to take effect.

    https://access.redhat.com/errata/RHSA-2021:0297
  • Fixedthunderbird-0:78.7.0-1.el7_9.src as a component of Red Hat Enterprise Linux Client (v. 7)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 All running instances of Thunderbird must be restarted for the update to take effect.

    https://access.redhat.com/errata/RHSA-2021:0297
  • Fixedthunderbird-0:78.7.0-1.el7_9.src as a component of Red Hat Enterprise Linux Server Optional (v. 7)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 All running instances of Thunderbird must be restarted for the update to take effect.

    https://access.redhat.com/errata/RHSA-2021:0297
  • Fixedthunderbird-0:78.7.0-1.el7_9.src as a component of Red Hat Enterprise Linux Workstation (v. 7)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 All running instances of Thunderbird must be restarted for the update to take effect.

    https://access.redhat.com/errata/RHSA-2021:0297
  • Fixedthunderbird-0:78.7.0-1.el7_9.x86_64 as a component of Red Hat Enterprise Linux Client (v. 7)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 All running instances of Thunderbird must be restarted for the update to take effect.

    https://access.redhat.com/errata/RHSA-2021:0297
  • Fixedthunderbird-0:78.7.0-1.el7_9.x86_64 as a component of Red Hat Enterprise Linux Server Optional (v. 7)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 All running instances of Thunderbird must be restarted for the update to take effect.

    https://access.redhat.com/errata/RHSA-2021:0297
  • Fixedthunderbird-0:78.7.0-1.el7_9.x86_64 as a component of Red Hat Enterprise Linux Workstation (v. 7)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 All running instances of Thunderbird must be restarted for the update to take effect.

    https://access.redhat.com/errata/RHSA-2021:0297
  • Fixedthunderbird-debuginfo-0:78.7.0-1.el7_9.ppc64le as a component of Red Hat Enterprise Linux Server Optional (v. 7)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 All running instances of Thunderbird must be restarted for the update to take effect.

    https://access.redhat.com/errata/RHSA-2021:0297
  • Fixedthunderbird-debuginfo-0:78.7.0-1.el7_9.x86_64 as a component of Red Hat Enterprise Linux Client (v. 7)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 All running instances of Thunderbird must be restarted for the update to take effect.

    https://access.redhat.com/errata/RHSA-2021:0297
  • Fixedthunderbird-debuginfo-0:78.7.0-1.el7_9.x86_64 as a component of Red Hat Enterprise Linux Server Optional (v. 7)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 All running instances of Thunderbird must be restarted for the update to take effect.

    https://access.redhat.com/errata/RHSA-2021:0297
  • Fixedthunderbird-debuginfo-0:78.7.0-1.el7_9.x86_64 as a component of Red Hat Enterprise Linux Workstation (v. 7)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 All running instances of Thunderbird must be restarted for the update to take effect.

    https://access.redhat.com/errata/RHSA-2021:0297
  • Fixedthunderbird-0:78.7.0-1.el8_3.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 All running instances of Thunderbird must be restarted for the update to take effect.

    https://access.redhat.com/errata/RHSA-2021:0298
  • Fixedthunderbird-0:78.7.0-1.el8_3.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 All running instances of Thunderbird must be restarted for the update to take effect.

    https://access.redhat.com/errata/RHSA-2021:0298
  • Fixedthunderbird-0:78.7.0-1.el8_3.src as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 All running instances of Thunderbird must be restarted for the update to take effect.

    https://access.redhat.com/errata/RHSA-2021:0298
  • Fixedthunderbird-0:78.7.0-1.el8_3.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 All running instances of Thunderbird must be restarted for the update to take effect.

    https://access.redhat.com/errata/RHSA-2021:0298
  • Fixedthunderbird-debuginfo-0:78.7.0-1.el8_3.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 All running instances of Thunderbird must be restarted for the update to take effect.

    https://access.redhat.com/errata/RHSA-2021:0298
  • Fixedthunderbird-debuginfo-0:78.7.0-1.el8_3.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 All running instances of Thunderbird must be restarted for the update to take effect.

    https://access.redhat.com/errata/RHSA-2021:0298
  • Fixedthunderbird-debuginfo-0:78.7.0-1.el8_3.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 All running instances of Thunderbird must be restarted for the update to take effect.

    https://access.redhat.com/errata/RHSA-2021:0298
  • Fixedthunderbird-debugsource-0:78.7.0-1.el8_3.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 All running instances of Thunderbird must be restarted for the update to take effect.

    https://access.redhat.com/errata/RHSA-2021:0298
  • Fixedthunderbird-debugsource-0:78.7.0-1.el8_3.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 All running instances of Thunderbird must be restarted for the update to take effect.

    https://access.redhat.com/errata/RHSA-2021:0298
  • Fixedthunderbird-debugsource-0:78.7.0-1.el8_3.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 All running instances of Thunderbird must be restarted for the update to take effect.

    https://access.redhat.com/errata/RHSA-2021:0298
  • Fixedthunderbird-0:78.7.0-1.el8_2.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 All running instances of Thunderbird must be restarted for the update to take effect.

    https://access.redhat.com/errata/RHSA-2021:0299
  • Fixedthunderbird-0:78.7.0-1.el8_2.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 All running instances of Thunderbird must be restarted for the update to take effect.

    https://access.redhat.com/errata/RHSA-2021:0299
  • Fixedthunderbird-0:78.7.0-1.el8_2.src as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 All running instances of Thunderbird must be restarted for the update to take effect.

    https://access.redhat.com/errata/RHSA-2021:0299
  • Fixedthunderbird-0:78.7.0-1.el8_2.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 All running instances of Thunderbird must be restarted for the update to take effect.

    https://access.redhat.com/errata/RHSA-2021:0299
  • Fixedthunderbird-debuginfo-0:78.7.0-1.el8_2.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 All running instances of Thunderbird must be restarted for the update to take effect.

    https://access.redhat.com/errata/RHSA-2021:0299
  • Fixedthunderbird-debuginfo-0:78.7.0-1.el8_2.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 All running instances of Thunderbird must be restarted for the update to take effect.

    https://access.redhat.com/errata/RHSA-2021:0299
  • Fixedthunderbird-debuginfo-0:78.7.0-1.el8_2.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 All running instances of Thunderbird must be restarted for the update to take effect.

    https://access.redhat.com/errata/RHSA-2021:0299
  • Fixedthunderbird-debugsource-0:78.7.0-1.el8_2.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 All running instances of Thunderbird must be restarted for the update to take effect.

    https://access.redhat.com/errata/RHSA-2021:0299
  • Fixedthunderbird-debugsource-0:78.7.0-1.el8_2.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 All running instances of Thunderbird must be restarted for the update to take effect.

    https://access.redhat.com/errata/RHSA-2021:0299
  • Fixedthunderbird-debugsource-0:78.7.0-1.el8_2.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 All running instances of Thunderbird must be restarted for the update to take effect.

    https://access.redhat.com/errata/RHSA-2021:0299
  • Fixedthunderbird-0:78.7.0-1.el8_1.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.1)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 All running instances of Thunderbird must be restarted for the update to take effect.

    https://access.redhat.com/errata/RHSA-2021:0397
  • Fixedthunderbird-0:78.7.0-1.el8_1.src as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.1)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 All running instances of Thunderbird must be restarted for the update to take effect.

    https://access.redhat.com/errata/RHSA-2021:0397
  • Fixedthunderbird-0:78.7.0-1.el8_1.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.1)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 All running instances of Thunderbird must be restarted for the update to take effect.

    https://access.redhat.com/errata/RHSA-2021:0397
  • Fixedthunderbird-debuginfo-0:78.7.0-1.el8_1.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.1)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 All running instances of Thunderbird must be restarted for the update to take effect.

    https://access.redhat.com/errata/RHSA-2021:0397
  • Fixedthunderbird-debuginfo-0:78.7.0-1.el8_1.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.1)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 All running instances of Thunderbird must be restarted for the update to take effect.

    https://access.redhat.com/errata/RHSA-2021:0397
  • Fixedthunderbird-debugsource-0:78.7.0-1.el8_1.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.1)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 All running instances of Thunderbird must be restarted for the update to take effect.

    https://access.redhat.com/errata/RHSA-2021:0397
  • Fixedthunderbird-debugsource-0:78.7.0-1.el8_1.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.1)redhat_csaf

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 All running instances of Thunderbird must be restarted for the update to take effect.

    https://access.redhat.com/errata/RHSA-2021:0397
02

cvss

Technical severity, 0–10. One row per scoring source.

6.5
010

base score 0–10 · higher = more severe · hover a vector to decode

v2.04.3mediumAV:N/AC:M/Au:N/C:N/I:P/A:Nprimary · NVD / NIST USexploitability 8.6 · impact 2.9
v3.16.5mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:Nprimary · NVD / NIST USexploitability 2.8 · impact 3.6
v3.06.1mediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:Nsecondary · Red Hat Product Security US
v3.16mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N/E:Usecondary · CVSS-BT (t0sche)
03

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-200US
04

affected products (33)

Products and version ranges known to be affected.

showing 20 of 33
05

advisories (8)

Vendor and ecosystem advisories describing this.

  • RHSA-2021:0285Red Hat Security Advisory: firefox security update2021-01-27csaf · redhat_csafUS

    An update for firefox is now available for Red Hat Enterprise Linux 8.1 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

  • RHSA-2021:0288Red Hat Security Advisory: firefox security update2021-01-27csaf · redhat_csafUS

    An update for firefox is now available for Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

  • RHSA-2021:0289Red Hat Security Advisory: firefox security update2021-01-27csaf · redhat_csafUS

    An update for firefox is now available for Red Hat Enterprise Linux 8.2 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

  • RHSA-2021:0290Red Hat Security Advisory: firefox security update2021-01-28csaf · redhat_csafUS

    An update for firefox is now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

  • RHSA-2021:0297Red Hat Security Advisory: thunderbird security update2021-01-28csaf · redhat_csafUS

    An update for thunderbird is now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

  • RHSA-2021:0298Red Hat Security Advisory: thunderbird security update2021-01-28csaf · redhat_csafUS

    An update for thunderbird is now available for Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

  • RHSA-2021:0299Red Hat Security Advisory: thunderbird security update2021-01-28csaf · redhat_csafUS

    An update for thunderbird is now available for Red Hat Enterprise Linux 8.2 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

  • RHSA-2021:0397Red Hat Security Advisory: thunderbird security update2021-02-03csaf · redhat_csafUS

    An update for thunderbird is now available for Red Hat Enterprise Linux 8.1 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

06

also known as (3)

Other names and identifiers for this entity.

07

sources

Which sources assert this record, and when.

cnnvdenisa_euvdnvdredhat_csafNVDCVE.orgMITRE
published 2021-01-07modified 2026-06-17
08

references (38)

External citations — patches, advisories, analysis.

scry

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