Vulnerability · Published Sep 14, 2026 · Assigned by VulnCheck
CVE-2026-90930File Browser through 2.63.23 Path Traversal via Symlink Alias
Medium 6.8
In plain English
A medium-severity security flaw in filebrowser from filebrowser. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 43% of all known vulnerabilities).
Severity (CVSS 3.1)6.8Medium
Exploit odds (30 days)0.5%top 57.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| filebrowser | filebrowser | 0 – through 2.63.23 |
Weakness: CWE-59 · Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
References
- GitHub Security Advisory (GHSA-7w29-q235-57m9) vendor-advisory
- VulnCheck Advisory: File Browser through 2.63.23 Path Traversal via Symlink Alias third-party-advisory