Description (CNA)
filebrowser before 2.63.19 contains a permission bypass in the /api/resources endpoint. The checksum (?checksum=) branch of resourceGetHandler reads the entire file to compute a digest and returns it without performing a Perm.Download check (unlike the sibling raw, preview, and subtitle paths). As a result, an authenticated user provisioned with Perm.Download=false can obtain a content-hash oracle for any same-scope file (md5/sha1/sha256/sha512), enabling confirmation of known/guessed content, change detection, and offline brute-force of low-entropy files. This is an incomplete fix of CVE-2026-35606; it bypasses only the Download permission and does not defeat scope/path authorization.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| filebrowser / filebrowser | affected 0 before 2.63.19; unaffected 2.63.19 |
CWE
CWE-200
References
- https://github.com/filebrowser/filebrowser/security/advisories/GHSA-7whw-q6gh-xr59
- https://github.com/filebrowser/filebrowser/commit/b7dc392838f11d188f0bc0f2a1a99fad3f7dca03
- https://www.vulncheck.com/advisories/filebrowser-before-permission-bypass-via-checksum
ADP enrichment
No English description supplied.
No references supplied.