CVE-2026-90930 File Browser through 2.63.23 Path Traversal via Symlink Alias
Authenticated users can bypass file access restrictions and read or modify protected files by exploiting symbolic link resolution flaws in File Browser.
- 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-2026-90930?
CVE-2026-90930 is a high-severity path traversal vulnerability in filebrowser, published on 14 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
File Browser through 2.63.23 applies path rules to the requested lexical path but resolves symbolic links without reapplying rules to the target, allowing authenticated users to bypass deny rules. Attackers can read and overwrite rule-denied files by accessing them through in-scope symbolic link aliases that resolve to denied paths.
Weakness: CWE-59
Which versions are affected by CVE-2026-90930?
How do I fix CVE-2026-90930?
No fix has been published for CVE-2026-90930 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-2026-90930 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-90930 exists.
Sources
Also known as GHSA-7w29-q235-57m9, GHSA-w8fw-cw5v-v789.