CVE-2026-73611 File Browser 2.50.0 through 2.63.21 JWT Expiration Bypass
Attackers can bypass JWT expiration checks in File Browser when proxy authentication is configured, allowing indefinite access to protected and administrative routes.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-73611?
CVE-2026-73611 is a high-severity authentication bypass vulnerability in filebrowser, published on 13 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-613
Which versions are affected by CVE-2026-73611?
How do I fix CVE-2026-73611?
Apply the vendor's patch.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2026-73611 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-73611 exists.
Sources
Also known as GHSA-32pr-94pq-34pj, GHSA-v3jv-rmh2-635j, MINI-9xmf-f58f-8gvq, MINI-ppmh-cr3x-473g.