CVE-2026-73612

HIGH 8.1

File Browser before v2.63.22 Authorization Bypass via Recursive Operations

CVSS Score

8.1

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-639
Vendor	filebrowser
Product	filebrowser
Published	Aug 13, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

None

Affected Versions

filebrowser / filebrowser

0 < 2.63.22

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/filebrowser/filebrowser/security/advisories/GHSA-77x8-73f4-5485 github.com: https://github.com/filebrowser/filebrowser/commit/72faf6dd3c85628e332d3e567124b86708ce2695 vulncheck.com: https://www.vulncheck.com/advisories/file-browser-before-authorization-bypass-via-recursive-operations

Credits

hacdias