{"cve":"CVE-2026-55776","nvd":{"published":"2026-09-15T16:17:16.220","modified":"2026-09-29T19:06:32.333","status":"Deferred","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.","cvss_v4":null,"cvss_v3":{"version":"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},"cwes":["CWE-617"],"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"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:53:43.293028046+00:00"},"epss":{"cve":"CVE-2026-55776","score":0.00612,"percentile":0.49318,"date":"2026-11-01"},"kev":null,"osv":[{"id":"GHSA-8w8f-r2xv-4q4j","url":"https://osv.dev/vulnerability/GHSA-8w8f-r2xv-4q4j","summary":"OpenBao: Transit secrets engine crashes on key creation with `derived: true` for asymmetric key types","modified":"2026-09-25T14:25:40.411486230Z","packages":[{"ecosystem":"Go","name":"github.com/openbao/openbao","purl":"pkg:golang/github.com/openbao/openbao","ranges":[">=0.1.0 <=2.5.4"],"fixed":[]},{"ecosystem":"Go","name":"github.com/openbao/openbao","purl":"pkg:golang/github.com/openbao/openbao","ranges":["<0.0.0-20260617104123-db57c62602b2"],"fixed":["0.0.0-20260617104123-db57c62602b2"]}]},{"id":"GO-2026-5267","url":"https://osv.dev/vulnerability/GO-2026-5267","summary":"OpenBao: Transit secrets engine crashes on key creation with `derived: true` for asymmetric key types in github.com/openbao/openbao","modified":"2026-09-25T14:25:40.411486230Z","packages":[{"ecosystem":"Go","name":"github.com/openbao/openbao","purl":"pkg:golang/github.com/openbao/openbao","ranges":["<0.0.0-20260617104123-db57c62602b2",">=0.1.0"],"fixed":["0.0.0-20260617104123-db57c62602b2"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}