{"id":"BIT-openbao-2026-55776","revision":null,"records":[{"revision":"568cb5db0dff485296f64c200d4d9793","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-55776","aliases":[],"title":"OpenBao: Transit secrets engine crashes on key creation with `derived: true` for asymmetric key types","description":"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.","state":0,"publishedAt":"2026-09-15T15:43:29.564+00:00","modifiedAt":"2026-09-17T15:35:58.867+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 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":6.5,"severity":"MEDIUM"}],"references":["https://github.com/openbao/openbao/security/advisories/GHSA-8w8f-r2xv-4q4j","https://github.com/openbao/openbao/pull/3309","https://github.com/openbao/openbao/pull/3312","https://github.com/openbao/openbao/commit/bb17827f3e33779a10166f7d0e61b191c0facef9","https://github.com/openbao/openbao/commit/db57c62602b25da12951f3f0edb888e7c4da61e5","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-2026-55776","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-55776","identifiers":["CVE-2026-55776"]},"retained":false,"historicalAffected":[]},{"revision":"29fea2f9c96a4913b12bd1edaa01cfea","observedAt":"2026-11-11T14:04:36.976+00:00","statement":{"source":"euvd","id":"EUVD-2026-78682","aliases":["CVE-2026-55776","GHSA-8w8f-r2xv-4q4j"],"title":"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 s…","description":"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.","state":0,"publishedAt":null,"modifiedAt":null,"affected":[],"metrics":[{"system":"EUVD CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":6.5,"severity":null}],"references":["https://github.com/openbao/openbao/security/advisories/GHSA-8w8f-r2xv-4q4j","https://github.com/openbao/openbao/pull/3309","https://github.com/openbao/openbao/pull/3312","https://github.com/openbao/openbao/commit/bb17827f3e33779a10166f7d0e61b191c0facef9","https://github.com/openbao/openbao/commit/db57c62602b25da12951f3f0edb888e7c4da61e5","https://github.com/openbao/openbao/releases/tag/v2.5.5","https://github.com/openbao/openbao/releases/tag/v2.6.0"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-78682","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"Sep 15, 2026, 3:43:29 PM","dateUpdated":"Sep 17, 2026, 3:35:58 PM"},"relatedAdvisories":[],"note":"EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON."},"key":"euvd:EUVD-2026-78682","identifiers":["EUVD-2026-78682","CVE-2026-55776","GHSA-8w8f-r2xv-4q4j"]},"retained":false,"historicalAffected":[]},{"revision":"3932759eb7954cfabbb199ac63a59c48","observedAt":"2026-10-25T14:19:05.298+00:00","statement":{"source":"nvd","id":"CVE-2026-55776","aliases":[],"title":"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 s…","description":"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.","state":0,"publishedAt":"2026-09-15T16:17:16.22+00:00","modifiedAt":"2026-09-29T19:06:32.333+00:00","affected":[],"metrics":[{"system":"CVSS 3.1 · security-advisories@github.com · Secondary","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":6.5,"severity":"MEDIUM"}],"references":["https://github.com/openbao/openbao/commit/bb17827f3e33779a10166f7d0e61b191c0facef9","https://github.com/openbao/openbao/commit/db57c62602b25da12951f3f0edb888e7c4da61e5","https://github.com/openbao/openbao/pull/3309","https://github.com/openbao/openbao/pull/3312","https://github.com/openbao/openbao/releases/tag/v2.5.5","https://github.com/openbao/openbao/releases/tag/v2.6.0","https://github.com/openbao/openbao/security/advisories/GHSA-8w8f-r2xv-4q4j"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-55776","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Deferred","weaknesses":["CWE-617"],"productCriteria":[],"sourceDates":{"published":"2026-09-15T16:17:16.220","lastModified":"2026-09-29T19:06:32.333"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-55776","identifiers":["CVE-2026-55776"]},"retained":false,"historicalAffected":[]},{"revision":"a45d32021c46405d81fd9cf601c41ee9","observedAt":"2026-10-24T13:19:41.952+00:00","statement":{"source":"osv","id":"GHSA-8w8f-r2xv-4q4j","aliases":["BIT-openbao-2026-55776","CVE-2026-55776","GO-2026-5267"],"title":"OpenBao: Transit secrets engine crashes on key creation with `derived: true` for asymmetric key types","description":"On OpenBao 2.5.4 and 2.5.2(and likely earlier versions also), an authenticated caller with write access to `transit/keys/*` can crash the OpenBao server by issuing a single key-creation request that combines an asymmetric `type` (`rsa-*`, `ecdsa-*`, `ed25519`)\nwith `derived: true`. The server returns no HTTP response and the process terminates (exit code 2). This is a remote, low-complexity denial-of-service against the OpenBao server.\n\n\nMount the transit engine:\n\n     `curl -sS -X POST -H \"X-Vault-Token: root\" \\\n       -d '{\"type\":\"transit\"}' \\\n       http://127.0.0.1:8200/v1/sys/mounts/transit`\n\nTrigger the crash:\n\n     `curl -sS -w '\\nHTTP %{http_code}\\n' -X POST \\\n       -H \"X-Vault-Token: root\" \\\n       -H \"Content-Type: application/json\" \\\n       -d '{\"type\":\"rsa-2048\",\"derived\":true,\"exportable\":true,\"deletion_allowed\":false}' \\\n       http://127.0.0.1:8200/v1/transit/keys/some-key-name`\n\nYou can try with both JSON or HCL It will crash the entire cluster.\n\n  Observed:\n     HTTP 000\n     curl: (52) Empty reply from server\n\n     $ docker ps -a --filter name=openbao\n     STATUS: Exited (2)\n\nRoot Cause (Hypothesis)\nKey-derivation paths in the transit engine appear to assume a symmetric key shape (a derivable key context). When `derived: true` is supplied alongside an asymmetric `type`, the creation path likely panics on a missing derived-key field or\n  invalid type assertion rather than returning a structured validation error. Maintainers should confirm against the transit `policy.go` / key-creation path.\n\nSuggested fix:\nValidate the (`type`, `derived`) combination at the top of the create-key handler. Reject with a 400 if `derived: true` is set on any non-symmetric type (i.e. anything other than aes128-gcm96, aes256-gcm96, chacha20-poly1305,\nxchacha20-poly1305). Do this before any code path that may panic on missing derived-key state.","state":0,"publishedAt":"2026-06-19T21:42:09+00:00","modifiedAt":"2026-09-25T14:25:40.4114862+00:00","affected":[{"ecosystem":"Go","name":"github.com/openbao/openbao","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0.1.0"},{"kind":"last_affected","version":"2.5.4"}]}],"versions":[],"rawVersionEvidence":null},{"ecosystem":"Go","name":"github.com/openbao/openbao","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"},{"kind":"fixed","version":"0.0.0-20260617104123-db57c62602b2"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V3","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"MODERATE"}],"references":["https://github.com/openbao/openbao/security/advisories/GHSA-8w8f-r2xv-4q4j","https://github.com/openbao/openbao/pull/3309","https://github.com/openbao/openbao/commit/db57c62602b25da12951f3f0edb888e7c4da61e5","https://github.com/openbao/openbao","https://github.com/openbao/openbao/releases/tag/v2.5.5"],"sourceUrl":"https://github.com/advisories/GHSA-8w8f-r2xv-4q4j","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-8w8f-r2xv-4q4j","identifiers":["GHSA-8w8f-r2xv-4q4j","BIT-openbao-2026-55776","CVE-2026-55776","GO-2026-5267"]},"retained":false,"historicalAffected":[]},{"revision":"c17d735763aa4a1dba4504bb77a2ecd0","observedAt":"2026-10-24T13:19:41.952+00:00","statement":{"source":"osv","id":"GO-2026-5267","aliases":["BIT-openbao-2026-55776","CVE-2026-55776","GHSA-8w8f-r2xv-4q4j"],"title":"OpenBao: Transit secrets engine crashes on key creation with `derived: true` for asymmetric key types in github.com/openbao/openbao","description":"OpenBao: Transit secrets engine crashes on key creation with `derived: true` for asymmetric key types in github.com/openbao/openbao","state":0,"publishedAt":"2026-06-25T18:43:15+00:00","modifiedAt":"2026-09-25T14:25:40.4114862+00:00","affected":[{"ecosystem":"Go","name":"github.com/openbao/openbao","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"},{"kind":"fixed","version":"0.0.0-20260617104123-db57c62602b2"},{"kind":"introduced","version":"0.1.0"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[],"references":["https://github.com/openbao/openbao/security/advisories/GHSA-8w8f-r2xv-4q4j","https://github.com/openbao/openbao/commit/db57c62602b25da12951f3f0edb888e7c4da61e5","https://github.com/openbao/openbao/pull/3309","https://github.com/openbao/openbao/releases/tag/v2.5.5"],"sourceUrl":"https://osv.dev/vulnerability/GO-2026-5267","license":"OSV · upstream source license applies","key":"osv:GO-2026-5267","identifiers":["GO-2026-5267","BIT-openbao-2026-55776","CVE-2026-55776","GHSA-8w8f-r2xv-4q4j"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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