{"id":"CVE-2026-55874","state":"PUBLISHED","title":"SeaweedFS: Path traversal in the S3 gateway X-Amz-Copy-Source header allows cross-bucket object read","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.","publishedAt":"2026-07-08T14:43:40.155Z","updatedAt":"2026-07-08T17:01:02.948Z","severity":{"score":7.7,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["seaweedfs seaweedfs"],"affected":[{"vendor":"seaweedfs","product":"seaweedfs","versions":[{"version":"< 4.34","status":"affected"}]}],"references":["https://github.com/seaweedfs/seaweedfs/security/advisories/GHSA-56wq-x3wv-3ff4","https://github.com/seaweedfs/seaweedfs/pull/9929","https://github.com/seaweedfs/seaweedfs/commit/b44cf51fe931bd75aa4d37ae766bea90d7f85ccd","https://github.com/seaweedfs/seaweedfs/releases/tag/4.34"],"weaknesses":["CWE-22"],"ingestedAt":"2026-10-29T20:12:24.861Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/55xxx/CVE-2026-55874.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-55874","state":"PUBLISHED","datePublished":"2026-07-08T14:43:40.155Z","dateUpdated":"2026-07-08T17:01:02.948Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-06-17T16:59:42.759Z"},"containers":{"cna":{"title":"SeaweedFS: Path traversal in the S3 gateway X-Amz-Copy-Source header allows cross-bucket object read","descriptions":[{"lang":"en","value":"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":[{"vendor":"seaweedfs","product":"seaweedfs","versions":[{"version":"< 4.34","status":"affected"}]}],"references":[{"url":"https://github.com/seaweedfs/seaweedfs/security/advisories/GHSA-56wq-x3wv-3ff4","name":"https://github.com/seaweedfs/seaweedfs/security/advisories/GHSA-56wq-x3wv-3ff4","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/seaweedfs/seaweedfs/pull/9929","name":"https://github.com/seaweedfs/seaweedfs/pull/9929","tags":["x_refsource_MISC"]},{"url":"https://github.com/seaweedfs/seaweedfs/commit/b44cf51fe931bd75aa4d37ae766bea90d7f85ccd","name":"https://github.com/seaweedfs/seaweedfs/commit/b44cf51fe931bd75aa4d37ae766bea90d7f85ccd","tags":["x_refsource_MISC"]},{"url":"https://github.com/seaweedfs/seaweedfs/releases/tag/4.34","name":"https://github.com/seaweedfs/seaweedfs/releases/tag/4.34","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":7.7,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-22","lang":"en","description":"CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-07-08T14:43:40.155Z"},"source":{"advisory":"GHSA-56wq-x3wv-3ff4","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-08T16:52:14.324777Z","id":"CVE-2026-55874","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-07-08T17:01:02.948Z"}}]}}}