CVE-2026-45808

Weakness

OpenBao is an open source identity-based secrets management system. Prior to version 2.5.4, OpenBao's namespaces provide multi-tenant separation. A tenant who intentionally leaks lease identifiers can have their lease and underlying credential revoked or renewed by a user in another tenant via the legacy, undocumented `sys/revoke` and `sys/renew` endpoints. This is fixed in OpenBao v2.5.4.

References

• https://github.com/openbao/openbao/commit/c0495646b41cea0e3f5a1030132e9cf5c2375b5c
• https://github.com/openbao/openbao/pull/3152
• https://github.com/openbao/openbao/releases/tag/v2.5.4
• https://github.com/openbao/openbao/security/advisories/GHSA-v8v8-cm84-m686