{"id":"CVE-2026-55873","aliases":["BIT-seaweedfs-2026-55873","GHSA-hgpf-8634-g44c"],"url":"https://o3.security/vulnerability/CVE-2026-55873","summary":"SeaweedFS: Improper authorization in the S3Tables / Iceberg REST management API lets a low-privileged S3 user enumerate administrator-owned table buckets","details":"SeaweedFS is a distributed storage system. In versions 4.08 through 4.33, requests signed with SigV4 service s3tables are routed to the S3Tables management API where authorization collapses account-less S3 identities into the shared admin account and fails open, allowing an authenticated low-privileged S3 user to enumerate administrator-owned table bucket names and ARNs. This issue is fixed in version 4.34.","published":"2026-07-08T14:48:37Z","modified":"2026-08-12T03:51:19.137147074Z","cvss":{"score":4.3,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Go","name":"github.com/seaweedfs/seaweedfs","fixedVersion":"0.0.0-20260614205536-b13463880c1f"}],"fix":{"url":"https://github.com/seaweedfs/seaweedfs/commit/b13463880c1fa62e255c058a9228b63cc95b4b36","label":"seaweedfs/seaweedfs@b134638"},"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-2026-55873.json"},{"type":"ADVISORY","url":"https://github.com/seaweedfs/seaweedfs/security/advisories/GHSA-hgpf-8634-g44c"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-55873"},{"type":"FIX","url":"https://github.com/seaweedfs/seaweedfs/commit/b13463880c1fa62e255c058a9228b63cc95b4b36"},{"type":"FIX","url":"https://github.com/seaweedfs/seaweedfs/pull/9961"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:19.137147074Z"}}