CVE-2026-73613 filebrowser before 2.63.19 Out-of-Scope File Deletion via Symlink
Authenticated users can delete arbitrary files outside their scope by exploiting a symlink race condition in the TUS upload cache eviction mechanism.
- 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-2026-73613?
CVE-2026-73613 is a high-severity path traversal 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
filebrowser versions before 2.63.19 contain an out-of-scope file deletion vulnerability in the TUS upload cache eviction mechanism that allows authenticated users with only Create permission to delete arbitrary files outside their scope. Attackers can swap an ancestor directory with a symlink during the cache TTL window to redirect the raw os.Remove call to an out-of-scope target, bypassing ScopedFs scope guards and Perm.Delete checks.
Weakness: CWE-59
Which versions are affected by CVE-2026-73613?
How do I fix CVE-2026-73613?
No fix has been published for CVE-2026-73613 yet. Limit exposure of the affected software until one is available.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2026-73613 being exploited?
There is no known exploitation of CVE-2026-73613 in the wild and no public exploit code.
Sources
Also known as GHSA-m9f5-2232-frp6, GHSA-px44-p4fg-h68v.