Arbitrary File Upload Affecting cockpit-hq/cockpit package, versions <2.14.0
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published4 May 2026
- disclosed29 Apr 2026
- creditUnknown
Introduced: 29 Apr 2026
NewCVE-2026-38991 (opens in a new tab)How to fix?
Upgrade cockpit-hq/cockpit to version 2.14.0 or higher.
Overview
Affected versions of this package are vulnerable to Arbitrary File Upload via the _isFileTypeAllowed function in the Bucket component. An attacker can execute arbitrary code on the server by renaming files with a .php extension through specially crafted filenames. This is only exploitable if the attacker is authenticated.