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TI-2026-28244 Aliases CVE-2026-38991GHSA-j2rx-4jg9-79mw

Cockpit 2.13.5 and earlier is affected by a misconfiguration within the Bucket component…

Priority HIGH 73CWE-434Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and GitHub. Impact type from CWE-434.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00375 31st percentileScored 2026-11-07
Fix Fixed cockpit-hq/cockpit (Packagist): 2.14.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
—cockpit-hq/cockpit (Packagist)before 2.14.02.14.0Patch availableGHSA-j2rx-4jg9-79mw
  • — Vendor— Affected all versions Fixed in — No fix listed CNA
  • cockpit-hq/cockpit (Packagist) Vendor— Affected before 2.14.0 Fixed in 2.14.0 Patch available GHSA-j2rx-4jg9-79mw

Remediation

  • Fix · GHSA-j2rx-4jg9-79mw cockpit-hq/cockpit (Packagist) Fixed in 2.14.0 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-38991
  2. 2026-10-03 Alias added: GHSA-j2rx-4jg9-79mw

References

Advisory 1

Other 4

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences