VULNERABILITY INTELLIGENCE

CVE-2026-38991

CVSS score8.8 HIGH
EPSS probability0.38%
CISA KEVNot currently listed
Published2026-04-29
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Description

Cockpit 2.13.5 and earlier is 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.

Weakness classification

  • 134c704f-9b21-4f2e-91b3-4a467353bcc0: CWE-434

Primary references