{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-72921","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-08-10T17:57:26.144Z","datePublished":"2026-08-11T14:28:49.398Z","dateUpdated":"2026-08-13T15:14:54.202Z"},"containers":{"cna":{"title":"SeaweedFS: Filer JWT allowed_prefixes literal prefix match allows cross-tenant access to sibling paths","problemTypes":[{"descriptions":[{"cweId":"CWE-863","lang":"en","description":"CWE-863: Incorrect Authorization","type":"CWE"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":8.1,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","version":"3.1"}}],"references":[{"name":"https://github.com/seaweedfs/seaweedfs/security/advisories/GHSA-gv5w-hfx8-8cwq","tags":["x_refsource_CONFIRM"],"url":"https://github.com/seaweedfs/seaweedfs/security/advisories/GHSA-gv5w-hfx8-8cwq"},{"name":"https://github.com/seaweedfs/seaweedfs/pull/9439","tags":["x_refsource_MISC"],"url":"https://github.com/seaweedfs/seaweedfs/pull/9439"},{"name":"https://github.com/seaweedfs/seaweedfs/commit/05ed5c9ae8a2a45101b52b61d02f170d20d587ff","tags":["x_refsource_MISC"],"url":"https://github.com/seaweedfs/seaweedfs/commit/05ed5c9ae8a2a45101b52b61d02f170d20d587ff"},{"name":"https://github.com/seaweedfs/seaweedfs/releases/tag/4.24","tags":["x_refsource_MISC"],"url":"https://github.com/seaweedfs/seaweedfs/releases/tag/4.24"}],"affected":[{"vendor":"seaweedfs","product":"seaweedfs","versions":[{"version":"< 4.24","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-08-11T14:28:49.398Z"},"descriptions":[{"lang":"en","value":"SeaweedFS is a distributed storage system. Prior to 4.24, the weed/server/filer_server_handlers.go allowed_prefixes authorization check used strings.HasPrefix on raw path strings, so a filer JWT scoped to /tenant1 also authorized sibling paths such as /tenant1234, /tenant1-old, and /tenant1backup, enabling cross-tenant reads and writes with a valid scoped token. This issue is fixed in version 4.24."}],"source":{"advisory":"GHSA-gv5w-hfx8-8cwq","discovery":"UNKNOWN"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-08-13T15:14:42.258989Z","id":"CVE-2026-72921","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-08-13T15:14:54.202Z"}}]}}