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CVE-2026-38991 - Vulnerability Analysis

HighCVSS: 8.8

Last Updated: April 29, 2026

Cockpit - Broken Access Control

Published: April 29, 2026Updated: April 29, 2026Remote Exploitable

Overview

Cockpit <= 2.13.5 contains a broken access control caused by misconfiguration in the Bucket component _isFileTypeAllowed function, letting authenticated attackers rename files to .php and execute arbitrary code.

Severity & Score

Severity: High

CVSS Score: 8.8

Impact

Authenticated attackers can execute arbitrary code on the server by renaming files to .php.

Mitigation

Update to a version later than 2.13.5 or the latest available version.

References

https://felsec.com/posts/cockpit-cms-2.13.5-multi-vulns/
https://github.com/Cockpit-HQ/Cockpit/releases/tag/2.14.0

Related Resources

Vulnerability Intelligence Dashboard
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Details

CVE ID: CVE-2026-38991
Severity: High
CVSS Score: 8.8
Type: broken_access_control
Status: rejected

CWE

CWE-434

CVSS Metrics

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H