{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "4.34"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "b44cf51fe931bd75aa4d37ae766bea90d7f85ccd"
            },
            {
              "fixed": "c6cf5a5bd7c87694c8d71ab41571f1412170ab2a"
            }
          ],
          "repo": "https://github.com/seaweedfs/seaweedfs",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-56wq-x3wv-3ff4"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-22"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55874.json"
  },
  "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.",
  "id": "CVE-2026-55874",
  "modified": "2026-07-15T01:48:57.815484024Z",
  "published": "2026-07-08T14:43:40.155Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/seaweedfs/seaweedfs/releases/tag/4.34"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55874.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/seaweedfs/seaweedfs/security/advisories/GHSA-56wq-x3wv-3ff4"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-55874"
    },
    {
      "type": "FIX",
      "url": "https://github.com/seaweedfs/seaweedfs/commit/b44cf51fe931bd75aa4d37ae766bea90d7f85ccd"
    },
    {
      "type": "FIX",
      "url": "https://github.com/seaweedfs/seaweedfs/pull/9929"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "SeaweedFS: Path traversal in the S3 gateway X-Amz-Copy-Source header allows cross-bucket object read"
}