{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-55774","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-06-17T14:40:28.379Z","datePublished":"2026-09-15T15:42:03.157Z","dateUpdated":"2026-09-15T17:26:45.372Z"},"containers":{"cna":{"title":"OpenBao: Cross-namespace lease revocation/renewal via canonical sys/leases/{revoke,renew} — incomplete fix of CVE-2026-45808","problemTypes":[{"descriptions":[{"cweId":"CWE-863","lang":"en","description":"CWE-863: Incorrect Authorization","type":"CWE"}]}],"metrics":[{"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"PRESENT","privilegesRequired":"HIGH","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"LOW","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":2.1,"baseSeverity":"LOW","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","version":"4.0"}}],"references":[{"name":"https://github.com/openbao/openbao/security/advisories/GHSA-c36x-h252-g9x2","tags":["x_refsource_CONFIRM"],"url":"https://github.com/openbao/openbao/security/advisories/GHSA-c36x-h252-g9x2"},{"name":"https://github.com/openbao/openbao/pull/3307","tags":["x_refsource_MISC"],"url":"https://github.com/openbao/openbao/pull/3307"},{"name":"https://github.com/openbao/openbao/pull/3310","tags":["x_refsource_MISC"],"url":"https://github.com/openbao/openbao/pull/3310"},{"name":"https://github.com/openbao/openbao/commit/9ba1413d793223cca67db12434093a2f25fdc540","tags":["x_refsource_MISC"],"url":"https://github.com/openbao/openbao/commit/9ba1413d793223cca67db12434093a2f25fdc540"},{"name":"https://github.com/openbao/openbao/commit/b20b999dd4044d7b419a5472d8fe08407828be37","tags":["x_refsource_MISC"],"url":"https://github.com/openbao/openbao/commit/b20b999dd4044d7b419a5472d8fe08407828be37"},{"name":"https://github.com/openbao/openbao/releases/tag/v2.5.5","tags":["x_refsource_MISC"],"url":"https://github.com/openbao/openbao/releases/tag/v2.5.5"},{"name":"https://github.com/openbao/openbao/releases/tag/v2.6.0","tags":["x_refsource_MISC"],"url":"https://github.com/openbao/openbao/releases/tag/v2.6.0"}],"affected":[{"vendor":"openbao","product":"openbao","versions":[{"version":"< 2.5.5","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-09-15T15:42:03.157Z"},"descriptions":[{"lang":"en","value":"OpenBao is an open source identity-based secrets management system. Prior to 2.5.5, an OpenBao user with access to sys/leases/revoke/:lease_id in one namespace could revoke a lease in another namespace when the foreign lease_id was known, bypassing namespace ACL isolation. The affected lease lookup routing in vault/expiration.go allowed FetchLeaseInfo and loadEntry to resolve cached or stored lease data outside the request namespace, allowing a tenant that intentionally disclosed a lease identifier to have the lease and its underlying credential revoked by another tenant. This issue is fixed in version 2.5.5."}],"source":{"advisory":"GHSA-c36x-h252-g9x2","discovery":"UNKNOWN"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-15T17:26:36.523521Z","id":"CVE-2026-55774","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-09-15T17:26:45.372Z"}}]}}