High severity8.8NVD Advisory· Published Apr 29, 2026· Updated Apr 29, 2026
CVE-2026-38991
CVE-2026-38991
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.
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Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
cockpit-hq/cockpitPackagist | < 2.14.0 | 2.14.0 |
Affected products
1Patches
Vulnerability mechanics
References
5News mentions
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