CVE-2026-55776
mediumOpenBao is an open source identity-based secrets management system.
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:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/openbao/openbao/commit/bb17827f3e33779a10166f7d0e61b191c0facef9 security-advisories@github.com
- https://github.com/openbao/openbao/commit/db57c62602b25da12951f3f0edb888e7c4da61e5 security-advisories@github.com
- https://github.com/openbao/openbao/pull/3309 security-advisories@github.com
- https://github.com/openbao/openbao/pull/3312 security-advisories@github.com
- https://github.com/openbao/openbao/releases/tag/v2.5.5 security-advisories@github.com
- https://github.com/openbao/openbao/releases/tag/v2.6.0 security-advisories@github.com
- https://github.com/openbao/openbao/security/advisories/GHSA-8w8f-r2xv-4q4j security-advisories@github.com
- https://github.com/openbao/openbao/security/advisories/GHSA-8w8f-r2xv-4q4j 134c704f-9b21-4f2e-91b3-4a467353bcc0