{"id":"BIT-seaweedfs-2026-55874","summary":"SeaweedFS: Path traversal in the S3 gateway X-Amz-Copy-Source header allows cross-bucket object read","details":"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.","aliases":["CVE-2026-55874","GHSA-56wq-x3wv-3ff4","GO-2026-6327"],"modified":"2026-09-02T19:55:38.573379095Z","published":"2026-07-14T08:55:20.997Z","database_specific":{"cpes":["cpe:2.3:a:seaweedfs:seaweedfs:*:*:*:*:*:go:*:*"],"severity":"High"},"references":[{"type":"WEB","url":"https://github.com/seaweedfs/seaweedfs/commit/b44cf51fe931bd75aa4d37ae766bea90d7f85ccd"},{"type":"WEB","url":"https://github.com/seaweedfs/seaweedfs/pull/9929"},{"type":"WEB","url":"https://github.com/seaweedfs/seaweedfs/releases/tag/4.34"},{"type":"WEB","url":"https://github.com/seaweedfs/seaweedfs/security/advisories/GHSA-56wq-x3wv-3ff4"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-55874"}],"affected":[{"package":{"name":"seaweedfs","ecosystem":"Bitnami","purl":"pkg:bitnami/seaweedfs"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"4.34.0"}]}],"database_specific":{"source":"https://github.com/bitnami/vulndb/tree/main/data/seaweedfs/BIT-seaweedfs-2026-55874.json"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N"}]}],"schema_version":"1.7.5"}