CVE-2022-4055

highpriority · track · 30EPSS 0.007 · 53 %ileDEEURUUS
grimoire priorityP2 · Scheduled
Exploitable?
—
no known exploitation
Likely / severe?
0.69% (53rd) EPSS
CVSS 7.4 · high
Is it mine?
21 products
Check your exposure
Who says so?
6 sources
cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-27

When xdg-mail is configured to use thunderbird for mailto URLs, improper parsing of the URL can lead to additional headers being passed to thunderbird that should not be included per RFC 2368. An attacker can use this method to create a mailto URL that looks safe to users, but will actually attach files when clicked.

01

remediations

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

A vendor fix is available.

  • Fixedxdg-utils-0:1.1.3-13.el9_6.noarch as a component of Red Hat Enterprise Linux AppStream (v. 9)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-2025:7672
  • Fixedxdg-utils-0:1.1.3-13.el9_6.src as a component of Red Hat Enterprise Linux AppStream (v. 9)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-2025:7672
  • Workaroundxdg-utils-0:1.1.3-13.el9_6.noarch as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf

    To mitigate this flaw, either: 1. Do not use mailto links at all 2. Always double-check in the user interface that there are no unwanted attachments before sending emails; especially when the email originates from clicking a mailto link.

  • Workaroundxdg-utils-0:1.1.3-13.el9_6.src as a component of Red Hat Enterprise Linux AppStream (v. 9)redhat_csaf

    To mitigate this flaw, either: 1. Do not use mailto links at all 2. Always double-check in the user interface that there are no unwanted attachments before sending emails; especially when the email originates from clicking a mailto link.

02

cvss

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

7.4
010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.8–7.4

v3.17.4highCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:Nprimary · NVD / NIST USexploitability 2.8 · impact 4
v3.17.4highAV:N/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:Nsecondary · FSTEC (BDU) RU
v3.17.4highCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:Nsecondary · ENISA EU
v3.17.4highCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:Nsecondaryexploitability 2.8 · impact 4
v3.16.8mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:N/E:Usecondary · CVSS-BT (t0sche)
v3.17.4highCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:Nsecondary · Red Hat Product Security US
03

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: poc · Automatable: no · Technical Impact: partialcoordinatorcisa_ssvcUS
04

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-146USCWE-146US
05

affected products (21)

Products and version ranges known to be affected.

showing 20 of 21
06

advisories (2)

Vendor and ecosystem advisories describing this.

  • RHSA-2025:7672Red Hat Security Advisory: xdg-utils security update2025-05-15csaf · redhat_csafUS

    An update for xdg-utils is now available for Red Hat Enterprise Linux 9. 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.

  • WID-SEC-W-2025-1074Red Hat Enterprise Linux (xdg-utils): Schwachstelle ermöglicht Umgehung von SicherheitsvorkehrungenDeutsch2025-05-15csaf · cert_bundDE

    Ein entfernter, anonymer Angreifer kann eine Schwachstelle in Red Hat Enterprise Linux ausnutzen, um Sicherheitsvorkehrungen zu umgehen.

07

also known as (4)

Other names and identifiers for this entity.

08

sources

Which sources assert this record, and when.

cnnvdenisa_euvdfstec_bducert_bundnvdredhat_csafNVDCVE.orgMITRE
published 2022-11-19modified 2026-07-20
09

references (5)

External citations — patches, advisories, analysis.

scry

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