Vulnerability Description
SeaweedFS is a distributed storage system for object storage (S3), file systems, and Iceberg tables. Prior to 4.30, the S3 API gateway and the Iceberg REST catalog gateway construct their routers with mux.NewRouter().SkipClean(true). With path cleaning disabled, a .. segment inside the URL survives routing, so a request such as `GET /bucket-A/../evil-bucket/key`, is matched as bucket=bucket-A, object=../evil-bucket/key. The captured object key is then joined into a filer path with util.JoinPath (S3) / path.Join (Iceberg), which collapse the .. server-side, so the actual read or write lands in evil-bucket. This vulnerability is fixed in 4.30.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Seaweedfs | Seaweedfs | < 4.30 |
Related Weaknesses (CWE)
References
- https://github.com/seaweedfs/seaweedfs/pull/9687Issue TrackingMitigation
- https://github.com/seaweedfs/seaweedfs/security/advisories/GHSA-w62w-66v9-vvgvExploitPatchVendor Advisory
- https://github.com/seaweedfs/seaweedfs/security/advisories/GHSA-w62w-66v9-vvgvExploitPatchVendor Advisory
FAQ
What is CVE-2026-54917?
CVE-2026-54917 is a vulnerability with a CVSS score of 10.0 (CRITICAL). SeaweedFS is a distributed storage system for object storage (S3), file systems, and Iceberg tables. Prior to 4.30, the S3 API gateway and the Iceberg REST catalog gateway construct their routers with...
How severe is CVE-2026-54917?
CVE-2026-54917 has been rated CRITICAL with a CVSS base score of 10.0/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2026-54917?
Check the references section above for vendor advisories and patch information. Affected products include: Seaweedfs Seaweedfs.