CVE-2022-4055

Publication date 19 November 2022

Last updated 21 August 2025

Ubuntu priority

Low

Why this priority?

Cvss 3 Severity Score

7.4 · High

Score breakdown

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.

Read the notes from the security team

Status

Package Ubuntu Release Status
xdg-utils 25.04 plucky
Vulnerable
24.10 oracular Ignored end of life, was needs-triage
24.04 LTS noble
Vulnerable
23.10 mantic Ignored end of life, was deferred [2024-06-10]
23.04 lunar Ignored end of life, was deferred [2024-06-10]
22.10 kinetic Ignored end of life, was deferred [2024-06-10]
22.04 LTS jammy
Vulnerable
20.04 LTS focal
Vulnerable
18.04 LTS bionic
Vulnerable
16.04 LTS xenial
Vulnerable
14.04 LTS trusty Ignored end of standard support

Notes

vyomydv

As of 2025-08-21, no patch available. https://gitlab.freedesktop.org/xdg/xdg-utils/-/merge_requests/89 does not fix this CVE, it removes proprietary (non-RFC6068) "mailto?attach=..." parameter. This CVE is around improper quoting allowing command injection.

Severity score breakdown

Parameter Value
Base score 7.4 · High
Attack vector Network
Attack complexity Low
Privileges required None
User interaction Required
Scope Changed
Confidentiality None
Integrity impact High
Availability impact None
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:N