CVE-2026-25889: File Browser has an Authentication Bypass in User Password Update
A case-sensitivity flaw in the password validation logic allows any authenticated user to change their password (or an admin to change any user’s password) without providing the current password. By using Title Case field name "Password" instead of lowercase "password" in the API request, the current_password verification is completely bypassed. This enables account takeover if an attacker obtains a valid JWT token through XSS, session hijacking, or other means.
CVSS Score: 7.5 (High) CWE: CWE-178 (Improper Handling of Case Sensitivity)
References
- github.com/advisories/GHSA-hxw8-4h9j-hq2r
- github.com/filebrowser/filebrowser
- github.com/filebrowser/filebrowser/commit/ff2f00498cff151e2fb1f5f0b16963bf33c3d6d4
- github.com/filebrowser/filebrowser/releases/tag/v2.57.1
- github.com/filebrowser/filebrowser/security/advisories/GHSA-hxw8-4h9j-hq2r
- nvd.nist.gov/vuln/detail/CVE-2026-25889
Code Behaviors & Features
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