{"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} \u2014 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"}}]}}

{}

{"affected": [{"affectedData": [{"product": "openbao", "vendor": "openbao", "versions": [{"status": "affected", "version": "< 2.5.5"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "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."}], "id": "CVE-2026-55774", "lastModified": "2026-09-15T16:17:15.923", "metrics": {"cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 2.1, "baseSeverity": "LOW", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "HIGH", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "version": "4.0", "vulnAvailabilityImpact": "LOW", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-09-15T16:17:15.923", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/openbao/openbao/commit/9ba1413d793223cca67db12434093a2f25fdc540"}, {"source": "security-advisories@github.com", "url": "https://github.com/openbao/openbao/commit/b20b999dd4044d7b419a5472d8fe08407828be37"}, {"source": "security-advisories@github.com", "url": "https://github.com/openbao/openbao/pull/3307"}, {"source": "security-advisories@github.com", "url": "https://github.com/openbao/openbao/pull/3310"}, {"source": "security-advisories@github.com", "url": "https://github.com/openbao/openbao/releases/tag/v2.5.5"}, {"source": "security-advisories@github.com", "url": "https://github.com/openbao/openbao/releases/tag/v2.6.0"}, {"source": "security-advisories@github.com", "url": "https://github.com/openbao/openbao/security/advisories/GHSA-c36x-h252-g9x2"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-863"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

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