{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-55776","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-06-17T14:40:28.379Z","datePublished":"2026-09-15T15:43:29.564Z","dateUpdated":"2026-09-17T15:35:58.867Z"},"containers":{"cna":{"title":"OpenBao: Transit secrets engine crashes on key creation with `derived: true` for asymmetric key types","problemTypes":[{"descriptions":[{"cweId":"CWE-617","lang":"en","description":"CWE-617: Reachable Assertion","type":"CWE"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","version":"3.1"}}],"references":[{"name":"https://github.com/openbao/openbao/security/advisories/GHSA-8w8f-r2xv-4q4j","tags":["x_refsource_CONFIRM"],"url":"https://github.com/openbao/openbao/security/advisories/GHSA-8w8f-r2xv-4q4j"},{"name":"https://github.com/openbao/openbao/pull/3309","tags":["x_refsource_MISC"],"url":"https://github.com/openbao/openbao/pull/3309"},{"name":"https://github.com/openbao/openbao/pull/3312","tags":["x_refsource_MISC"],"url":"https://github.com/openbao/openbao/pull/3312"},{"name":"https://github.com/openbao/openbao/commit/bb17827f3e33779a10166f7d0e61b191c0facef9","tags":["x_refsource_MISC"],"url":"https://github.com/openbao/openbao/commit/bb17827f3e33779a10166f7d0e61b191c0facef9"},{"name":"https://github.com/openbao/openbao/commit/db57c62602b25da12951f3f0edb888e7c4da61e5","tags":["x_refsource_MISC"],"url":"https://github.com/openbao/openbao/commit/db57c62602b25da12951f3f0edb888e7c4da61e5"},{"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":"2026-09-15T15:43:29.564Z"},"descriptions":[{"lang":"en","value":"OpenBao is an open source identity-based secrets management system. Prior to 2.5.5, an authenticated OpenBao caller with write access to transit/keys/* could terminate the server process by setting derived to true while the type parameter selected rsa-, ecdsa-, or ed25519. The Transit policy creation path in builtin/logical/transit/backend.go and sdk/helper/keysutil/policy.go could reach an error path that double-unlocked a mutex while handling this invalid asymmetric derived-key combination, causing a panic, no HTTP response, process exit, and denial of service. JSON and HCL key-creation requests can express the triggering combination. This issue is fixed in version 2.5.5."}],"source":{"advisory":"GHSA-8w8f-r2xv-4q4j","discovery":"UNKNOWN"}},"adp":[{"references":[{"url":"https://github.com/openbao/openbao/security/advisories/GHSA-8w8f-r2xv-4q4j","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-17T15:33:37.116627Z","id":"CVE-2026-55776","options":[{"Exploitation":"poc"},{"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":"2026-09-17T15:35:58.867Z"}}]}}