{"cve":"CVE-2026-55874","nvd":{"published":"2026-07-08T15:16:30.320","modified":"2026-07-08T18:16:33.270","status":"Deferred","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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N","score":7.7},"cwes":["CWE-22"],"references":["https://github.com/seaweedfs/seaweedfs/commit/b44cf51fe931bd75aa4d37ae766bea90d7f85ccd","https://github.com/seaweedfs/seaweedfs/pull/9929","https://github.com/seaweedfs/seaweedfs/releases/tag/4.34","https://github.com/seaweedfs/seaweedfs/security/advisories/GHSA-56wq-x3wv-3ff4"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:42:16.820116992+00:00"},"epss":{"cve":"CVE-2026-55874","score":0.00606,"percentile":0.4899,"date":"2026-11-01"},"kev":null,"osv":[{"id":"GHSA-56wq-x3wv-3ff4","url":"https://osv.dev/vulnerability/GHSA-56wq-x3wv-3ff4","summary":"SeaweedFS: Path traversal in the S3 gateway X-Amz-Copy-Source header allows cross-bucket object read","modified":"2026-09-02T19:55:49.122518842Z","packages":[{"ecosystem":"Go","name":"github.com/seaweedfs/seaweedfs","purl":"pkg:golang/github.com/seaweedfs/seaweedfs","ranges":["<0.0.0-20260612000715-b44cf51fe931"],"fixed":["0.0.0-20260612000715-b44cf51fe931"]}]},{"id":"GO-2026-6327","url":"https://osv.dev/vulnerability/GO-2026-6327","summary":"SeaweedFS: Path traversal in the S3 gateway X-Amz-Copy-Source header allows cross-bucket object read in github.com/seaweedfs/seaweedfs","modified":"2026-09-02T19:55:49.122518842Z","packages":[{"ecosystem":"Go","name":"github.com/seaweedfs/seaweedfs","purl":"pkg:golang/github.com/seaweedfs/seaweedfs","ranges":["<0.0.0-20260612000715-b44cf51fe931"],"fixed":["0.0.0-20260612000715-b44cf51fe931"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}