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CVE-2022-4055

HIGH

7.4

CVSS Score

Published: November 18, 2022 at 12:00 AM UTC

Updated: June 17, 2026 at 05:19 AM UTC

1 product affected across 1 vendorXdg Utils

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Severity

HIGH7.4

Exploit prediction

EPSS 0.7%

SSVC

PoC

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Xdg Utils · Freedesktop

95%

1.1.0 ≤ v ≤ 1.1.3xdg-utils 1.1.0 to and including 1.1.3

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

ExploitIssue TrackingThird Party Advisory

Source: [email protected]

https://gitlab.freedesktop.org/xdg/xdg-utils/-/issues/205#note_1494267

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.4HIGHCISA-ADP

Attack Vector: NETWORK
Complexity: LOW
Privileges: NONE
User Interaction: REQUIRED
Scope: CHANGED
Confidentiality: NONE
Integrity: HIGH
Availability: NONE

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-146

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