CVE-2026-72837 File Browser before 2.63.20 Privilege Escalation via Proxy Authentication
Attackers with valid upstream credentials can access other users' files due to improper isolation in proxy authentication paths.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-72837?
CVE-2026-72837 is a high-severity vulnerability in filebrowser, published on 14 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
File Browser versions before 2.63.20 fail to honor the createUserDir isolation in proxy and hook authentication auto-provisioning paths. Attackers with valid upstream-authenticated credentials can read, modify, delete, and share files belonging to other users by exploiting the server root scope assignment.
Weakness: CWE-284
Which versions are affected by CVE-2026-72837?
How do I fix CVE-2026-72837?
No fix has been published for CVE-2026-72837 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-72837 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-72837 exists.
Sources
Also known as GHSA-6x93-4cv7-m749, GHSA-j7jh-37pf-mf8h.