CVE-2026-73611

Description

File Browser versions from 2.50.0 through 2.63.21 fail to validate JWT expiration when proxy authentication is configured with a non-default logout page. Attackers with a previously valid token can access protected routes and administrative endpoints indefinitely, and exchange expired tokens for fresh ones via the renewal endpoint.

CVSS Vector

References

• https://github.com/filebrowser/filebrowser/commit/72faf6dd3c85628e332d3e567124b86708ce2695
• https://github.com/filebrowser/filebrowser/security/advisories/GHSA-v3jv-rmh2-635j
• https://www.vulncheck.com/advisories/file-browser-through-jwt-expiration-bypass