Improper Authorization Affecting github.com/filebrowser/filebrowser/http package, versions >=0.0.0
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
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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Start learning- Snyk IDSNYK-GOLANG-GITHUBCOMFILEBROWSERFILEBROWSERHTTP-14038267
- published16 Nov 2025
- disclosed13 Nov 2025
- creditbbodisteanu-hacken
Introduced: 13 Nov 2025
NewCVE-2025-64523 (opens in a new tab)How to fix?
Upgrade github.com/filebrowser/filebrowser/http to version or higher.
Overview
Affected versions of this package are vulnerable to Improper Authorization via the shareDeleteHandler function, which handles deletion requests based solely on the share hash, and does not verify whether the link.UserID matches the currently authenticated user's ID (d.user.ID). An attacker can delete other users' shared links without proper authorization by sending crafted DELETE requests with a valid authentication token.
PoC
Prerequisites: There are two authenticated users (User A and User B), both with share permissions.
User A generates a shareable link and receives a share hash (e.g., MEEuZK-v).
User B logs in and acquires a JWT token.
Using their JWT token, User B sends a DELETE request to /api/share/MEEuZK-v.
It’s observed that User B can delete User A’s share without being authorized.
DELETE /api/share/MEEuZK-v HTTP/1.1
Host: filebrowser.local Content-Type: application/json