CVE-2026-73612

High

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.

SeverityHigh

CVSS8.1

Exploit probability—

ProductFilebrowser

PublishedAug 13, 2026

First seenAug 13, 2026

Weakness typeCWE-639Authorization bypass through user-controlled key

How to fix

Update

filebrowser filebrowser2.63.22 or later

Patches

github.com/filebrowser/filebrowser/commit/72faf6dd3c85628e332d3e567124b86708ce2695

Vendor advisories

github.com/filebrowser/filebrowser/security/advisories/GHSA-77x8-73f4-5485

Affected products

Product	Affected versions	Fixed in
filebrowser filebrowser	v < 2.63.22	2.63.22

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