{"id":"BIT-openbao-2026-55776","summary":"OpenBao: Transit secrets engine crashes on key creation with `derived: true` for asymmetric key types","details":"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.","aliases":["CVE-2026-55776","GHSA-8w8f-r2xv-4q4j","GO-2026-5267"],"modified":"2026-09-25T14:25:50.995406039Z","published":"2026-09-25T12:28:12.116Z","database_specific":{"cpes":["cpe:2.3:a:openbao:openbao:*:*:*:*:*:go:*:*"],"severity":"Medium"},"references":[{"type":"WEB","url":"https://github.com/openbao/openbao/commit/bb17827f3e33779a10166f7d0e61b191c0facef9"},{"type":"WEB","url":"https://github.com/openbao/openbao/commit/db57c62602b25da12951f3f0edb888e7c4da61e5"},{"type":"WEB","url":"https://github.com/openbao/openbao/pull/3309"},{"type":"WEB","url":"https://github.com/openbao/openbao/pull/3312"},{"type":"WEB","url":"https://github.com/openbao/openbao/releases/tag/v2.5.5"},{"type":"WEB","url":"https://github.com/openbao/openbao/releases/tag/v2.6.0"},{"type":"WEB","url":"https://github.com/openbao/openbao/security/advisories/GHSA-8w8f-r2xv-4q4j"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-55776"}],"affected":[{"package":{"name":"openbao","ecosystem":"Bitnami","purl":"pkg:bitnami/openbao"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"2.5.5"}]}],"database_specific":{"source":"https://github.com/bitnami/vulndb/tree/main/data/openbao/BIT-openbao-2026-55776.json"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}],"schema_version":"1.9.0"}