8.1highHigh
CVE-2026-73612
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.
What the metrics mean
- It is reachable over a network, without needing local access.
- For an attacker who can reach it, no special conditions are needed to exploit it.
- To exploit it, an ordinary user account is needed.
- Beyond that, no action by a user is required.
Scoring
- CVSS
- 8.1 (v3.1)
- Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N- CVSS v4
- 8.6
- Weakness
- CWE-639
- Assigned by
- disclosure@vulncheck.com
Dates
- Published
- 2026-08-13
- Last modified
- 2026-09-08
- Sources
- NVD
References
- https://github.com/filebrowser/filebrowser/commit/72faf6dd3c85628e332d3e567124b86708ce2695
- https://github.com/filebrowser/filebrowser/security/advisories/GHSA-77x8-73f4-5485
- https://www.vulncheck.com/advisories/file-browser-before-authorization-bypass-via-recursive-operations
- https://github.com/filebrowser/filebrowser/security/advisories/GHSA-77x8-73f4-5485