CVE-2026-57856 (GCVE-0-2026-57856)
Vulnerability from cvelistv5 – Published: 2026-07-13 22:41 – Updated: 2026-07-13 22:41
VLAI
EPSS
VEX
Title
Cockpit CMS Path Traversal via Bucket Name in Bucket File Storage API
Summary
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
Severity
CWE
- CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://github.com/cockpit-hq/cockpit | product |
| https://github.com/Cockpit-HQ/Cockpit/commit/dde2… | patch |
| https://gist.github.com/sermikr0/821c4edd3c34e98a… | technical-description |
| https://www.vulncheck.com/advisories/cockpit-cms-… | third-party-advisory |
| https://www.vulncheck.com/advisories/cockpit-cms-… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Cockpit HQ | Cockpit CMS |
Affected:
0 , < 2.14.0
(git)
|
Date Public
2026-07-13 00:00
Credits
{
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"affected": [
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}
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"source": {
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"title": "Cockpit CMS Path Traversal via Bucket Name in Bucket File Storage API",
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"dateReserved": "2026-06-25T18:48:00.282Z",
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}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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