High severity7.7OSV Advisory· Published Jul 8, 2026· Updated Jul 8, 2026
CVE-2026-55874
CVE-2026-55874
Description
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
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
github.com/seaweedfs/seaweedfsGo | < 0.0.0-20260612000715-b44cf51fe931 | 0.0.0-20260612000715-b44cf51fe931 |
Affected products
4- osv-coords2 versions
< 4.34.0+ 1 more
- (no CPE)range: < 4.34.0
- (no CPE)range: < 0.0.20260902T191204-160000.1.1
Patches
Vulnerability mechanics
References
6- github.com/advisories/GHSA-56wq-x3wv-3ff4ghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-55874ghsaADVISORY
- github.com/seaweedfs/seaweedfs/commit/b44cf51fe931bd75aa4d37ae766bea90d7f85ccdnvdWEB
- github.com/seaweedfs/seaweedfs/pull/9929nvdWEB
- github.com/seaweedfs/seaweedfs/releases/tag/4.34nvdWEB
- github.com/seaweedfs/seaweedfs/security/advisories/GHSA-56wq-x3wv-3ff4nvdWEB
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