CVE-2026-38991

HIGH8.8EPSS 0.03%

Cockpit Vulnerable to Unrestricted Upload of File with Dangerous Type

Published: 4/29/2026Modified: 5/6/2026
Also known as:GHSA-j2rx-4jg9-79mw

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.

Affected packages (1)

CVSS scores

SourceVersionSeverityVector
osvCVSS 3.1HIGH8.8CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References (4)