File Browser before v2.63.22 Authorization Bypass via Recursive Operations

Advisories

File Browser before v2.63.22 Authorization Bypass via Recursive Operations

severity: high
date: 8/13/2026
Affecting: filebrowser >= 0, < 2.63.22
CVE: CVE-2026-73612
CWE: CWE-639 Authorization Bypass Through User-Controlled Key
CVSS: 8.6
CVSS V4 Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
References: GitHub Security Advisory (GHSA-77x8-73f4-5485)
Patch Commit
Credit: hacdias
Description: File Browser before v2.63.22 fails to validate access rules for descendants during recursive copy, rename, and delete operations, allowing authenticated users to bypass path-based access controls. Attackers can copy, rename, or delete denied files by operating on their allowed parent directory, defeating rule-based isolation for confidentiality and integrity.

Ready to get Started?

Explore VulnCheck, a next-generation Cyber Threat Intelligence platform, which provides exploit and vulnerability intelligence to help you prioritize and remediate vulnerabilities that matter.

Vulnerability Prioritization
Prioritize vulnerabilities that matter based on the threat landscape and defer vulnerabilities that don't.
Early Warning System
Real-time alerting of changes in the vulnerability landscape so that you can take action before the attacks start.

Schedule a Demo