{"id":"CVE-2026-55774","revision":"f02483db739a44c4943212e4e52fb328","records":[{"revision":"f02483db739a44c4943212e4e52fb328","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-55774","aliases":[],"title":"OpenBao: Cross-namespace lease revocation/renewal via canonical sys/leases/{revoke,renew} — incomplete fix of CVE-2026-45808","description":"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.","state":0,"publishedAt":"2026-09-15T15:42:03.157+00:00","modifiedAt":"2026-09-15T17:26:45.372+00:00","affected":[{"ecosystem":"Vendor product","name":"openbao","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"openbao\",\n                    \"product\": \"openbao\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< 2.5.5\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"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","score":2.1,"severity":"LOW"}],"references":["https://github.com/openbao/openbao/security/advisories/GHSA-c36x-h252-g9x2","https://github.com/openbao/openbao/pull/3307","https://github.com/openbao/openbao/pull/3310","https://github.com/openbao/openbao/commit/9ba1413d793223cca67db12434093a2f25fdc540","https://github.com/openbao/openbao/commit/b20b999dd4044d7b419a5472d8fe08407828be37","https://github.com/openbao/openbao/releases/tag/v2.5.5","https://github.com/openbao/openbao/releases/tag/v2.6.0"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-55774","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-55774","identifiers":["CVE-2026-55774"]},"retained":false,"historicalAffected":[]}],"coverage":[]}