GitHub Advisoryadvisory · Packagist

GHSA-j2rx-4jg9-79mw Cockpit Vulnerable to Unrestricted Upload of File with Dangerous Type

HIGH Published 2026-04-29 Modified 2026-05-06 Official page ↗
Aliases
CVE-2026-38991
Ecosystem
Packagist
Packages
cockpit-hq/cockpit
Severity
High
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weaknesses
CWE-434
Reviewed
2026-05-06

Affected packages

• Packagist cockpit-hq/cockpit: < 2.14.0 → fixed in 2.14.0

Description

Cockpit versions 2.13.5 and earlier are affected by a misconfiguration within the Bucket component _isFileTypeAllowed function where a specially crafted filename bypasses an extension filter. This allows an authenticated attacker to rename arbitrary files with the .php file extension enabling arbitrary code to be executed on the underlying server.

Related

Alias · CVE (1)

  • CVE-2026-38991 Cockpit 2.13.5 and earlier is affected by a misconfiguration within the Bucket component _isFileTypeAllowed function where a specially… vulnerability

Weakness · CWE (1)

  • CWE-434 Unrestricted Upload of File with Dangerous Type weakness

References