high7.7
CVE-2026-55874
SeaweedFS: Path traversal in the S3 gateway X-Amz-Copy-Source header allows cross-bucket object read
Impact
SeaweedFS is a distributed storage system. Prior to 4.34, the S3 API gateway does not reject dot-dot path segments in the X-Amz-Copy-Source header used by CopyObject and UploadPartCopy, allowing an authenticated identity scoped to one bucket to read objects from other buckets through server-side copy. This issue is fixed in version 4.34.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| go | github.com/seaweedfs/seaweedfs | < 0.0.0-20260612000715-b44cf51fe931 | 0.0.0-20260612000715-b44cf51fe931 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-56wq-x3wv-3ff4
- https://github.com/seaweedfs/seaweedfs/security/advisories/GHSA-56wq-x3wv-3ff4
- https://nvd.nist.gov/vuln/detail/CVE-2026-55874
- https://github.com/seaweedfs/seaweedfs/pull/9929
- https://github.com/seaweedfs/seaweedfs/commit/b44cf51fe931bd75aa4d37ae766bea90d7f85ccd
- https://github.com/seaweedfs/seaweedfs/releases/tag/4.34