CVE-2018-13796

mediumpriority · track · 27OT risk · elevatedEPSS 0.025 · 85 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

2.53% (85th) EPSS

CVSS 4.3 · medium

Is it mine?

15 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · osv · nvd

EPSS · scored 2026-10-28

An issue was discovered in GNU Mailman before 2.1.28. A crafted URL can cause arbitrary text to be displayed on a web page from a trusted site.

remediations

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

A vendor fix is available.

Fixedmailman-3:2.1.15-30.el7.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
https://access.redhat.com/errata/RHSA-2020:1054
Fixedmailman-3:2.1.15-30.el7.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
https://access.redhat.com/errata/RHSA-2020:1054
Fixedmailman-3:2.1.15-30.el7.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
https://access.redhat.com/errata/RHSA-2020:1054
Fixedmailman-3:2.1.15-30.el7.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
https://access.redhat.com/errata/RHSA-2020:1054
Fixedmailman-3:2.1.15-30.el7.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
https://access.redhat.com/errata/RHSA-2020:1054
Fixedmailman-3:2.1.15-30.el7.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
https://access.redhat.com/errata/RHSA-2020:1054
Fixedmailman-3:2.1.15-30.el7.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
https://access.redhat.com/errata/RHSA-2020:1054
Fixedmailman-debuginfo-3:2.1.15-30.el7.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
https://access.redhat.com/errata/RHSA-2020:1054
Fixedmailman-debuginfo-3:2.1.15-30.el7.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
https://access.redhat.com/errata/RHSA-2020:1054
Fixedmailman-debuginfo-3:2.1.15-30.el7.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
https://access.redhat.com/errata/RHSA-2020:1054
Fixedmailman-debuginfo-3:2.1.15-30.el7.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
https://access.redhat.com/errata/RHSA-2020:1054
Fixedmailman-debuginfo-3:2.1.15-30.el7.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
https://access.redhat.com/errata/RHSA-2020:1054

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

v3.06.5mediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:Nprimary · NVD / NIST USexploitability 2.8 · impact 3.6

v3.06.5mediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:Nsecondary · OSV

v3.06mediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N/E:Usecondary · CVSS-BT (t0sche)

v3.04.3mediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:Nsecondary · Red Hat Product Security US

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-20USprimaryCWE-20USCWE-345US

affected products (15)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
gnu mailman< 2.1.28nvdUScpe:2.3:a:gnu:mailman:*:*:*:*:*:*:*:*
PyPI mailman< 2.1.28osvUSpkg:pypi/mailman
mailman-3:2.1.15-30.el7.ppc64 as a component of Red Hat Enterprise Linux Server (v. 7)all versionsfixedredhat_csafUS
mailman-3:2.1.15-30.el7.ppc64le as a component of Red Hat Enterprise Linux Server (v. 7)all versionsfixedredhat_csafUS
mailman-3:2.1.15-30.el7.s390x as a component of Red Hat Enterprise Linux Server (v. 7)all versionsfixedredhat_csafUS
mailman-3:2.1.15-30.el7.src as a component of Red Hat Enterprise Linux Server (v. 7)all versionsfixedredhat_csafUS
mailman-3:2.1.15-30.el7.src as a component of Red Hat Enterprise Linux Workstation (v. 7)all versionsfixedredhat_csafUS
mailman-3:2.1.15-30.el7.x86_64 as a component of Red Hat Enterprise Linux Server (v. 7)all versionsfixedredhat_csafUS
mailman-3:2.1.15-30.el7.x86_64 as a component of Red Hat Enterprise Linux Workstation (v. 7)all versionsfixedredhat_csafUS
mailman-debuginfo-3:2.1.15-30.el7.ppc64 as a component of Red Hat Enterprise Linux Server (v. 7)all versionsfixedredhat_csafUS
mailman-debuginfo-3:2.1.15-30.el7.ppc64le as a component of Red Hat Enterprise Linux Server (v. 7)all versionsfixedredhat_csafUS
mailman-debuginfo-3:2.1.15-30.el7.s390x as a component of Red Hat Enterprise Linux Server (v. 7)all versionsfixedredhat_csafUS
mailman-debuginfo-3:2.1.15-30.el7.x86_64 as a component of Red Hat Enterprise Linux Server (v. 7)all versionsfixedredhat_csafUS
mailman-debuginfo-3:2.1.15-30.el7.x86_64 as a component of Red Hat Enterprise Linux Workstation (v. 7)all versionsfixedredhat_csafUS

advisories (3)

Vendor and ecosystem advisories describing this.

RHSA-2020:1054Red Hat Security Advisory: mailman security and bug fix update2020-03-31csaf · redhat_csafUS
An update for mailman is now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Moderate. 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.
GHSA-xqvg-xm9m-p2c4Moderate severity vulnerability that affects mailman2018-09-11ghsa · osvUS
An issue was discovered in GNU Mailman before 2.1.28. A crafted URL can cause arbitrary text to be displayed on a web page from a trusted site.
PYSEC-2026-661Moderate severity vulnerability that affects mailman2026-07-02vendor · osvUS
An issue was discovered in GNU Mailman before 2.1.28. A crafted URL can cause arbitrary text to be displayed on a web page from a trusted site.

also known as (6)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd osv nvd redhat_csaf NVD CVE.org MITRE

published 2018-07-12modified 2026-06-17

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references (19)

External citations — patches, advisories, analysis.

scry

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