CVE-2026-57856
Cockpit CMS Path Traversal via Bucket Name in Bucket File Storage API
Cockpit CMS contains a path traversal vulnerability in the Bucket file storage API (/system/buckets/api). The api() method in modules/System/Controller/Buckets.php sanitizes the bucket name with preg_replace('/[^a-zA-Z0-9-_\\.]/','', $bucket), which permits '..' and '../' sequences. The sanitized value is interpolated into a Flysystem path as uploads://buckets/{bucket}. Flysystem's WhitespacePathNormalizer resolves 'buckets/..' to the empty string (the uploads storage root) without raising PathTraversalDetected because the '..' has a preceding component to consume. An authenticated low-privileged user can send a crafted request with a '../' bucket name to list, upload, and delete files across all buckets, including those belonging to other users or roles
| CWE | CWE-22 |
| Vendor | cockpit hq |
| Product | cockpit cms |
| Published | Jul 13, 2026 |
| Last Updated | Jul 14, 2026 |
Get instant alerts for cockpit hq cockpit cms
Be the first to know when new high vulnerabilities affecting cockpit hq cockpit cms are published — delivered to Slack, Telegram or Discord.
CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H