جزئیات آسیب‌پذیری

filebrowser versions before v2.63.21 fail to canonicalize paths before evaluating access rules, allowing authenticated users to bypass administrator-defined deny rules using case-variant or backslash-separated paths. Attackers can request files with alternate path representations that match no rule but resolve to the same filesystem object, gaining unauthorized access to denied files within their scope.

• https://www.vulncheck.com/advisories/filebrowser-before-access-rule-bypass-via-path-canonicalization third-party-advisory
• https://github.com/filebrowser/filebrowser/security/advisories/GHSA-fgm5-pw99-w2p7 vendor-advisory