VDB
CVE-2026-55874
CVE-2026-55874
PUBLISHED
CVSS 7.7 HIGH
Reported by GitHub_M · Published July 8, 2026
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.
Risk Scores
CVSS 3.1
7.7
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| seaweedfs | seaweedfs | < 4.34 |
| seaweedfs | seaweedfs | < 4.34, < 4.34 |
| github.com | seaweedfs/seaweedfs | 0 |
Timeline
- Jul 8, 2026 CVE Published
- Jul 8, 2026 CVE Updated
- Jul 9, 2026 EPSS Score
- Jul 9, 2026 Coalition ESS Score
- Aug 7, 2026 EPSS Score
- Aug 24, 2026 EPSS Score
- Aug 26, 2026 EPSS Score
- Aug 28, 2026 EPSS Score
- Aug 28, 2026 Security Advisory
- Aug 30, 2026 EPSS Score
- Sep 3, 2026 EPSS Score
- Sep 5, 2026 EPSS Score
References
- https://github.com/seaweedfs/seaweedfs/security/advisories/GHSA-56wq-x3wv-3ff4 x_refsource_CONFIRM
- https://github.com/seaweedfs/seaweedfs/pull/9929 x_refsource_MISC
- https://github.com/seaweedfs/seaweedfs/commit/b44cf51fe931bd75aa4d37ae766bea90d7f85ccd x_refsource_MISC
- https://github.com/seaweedfs/seaweedfs/releases/tag/4.34 x_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2026-55874 advisory
- https://github.com/advisories/GHSA-56wq-x3wv-3ff4 advisory