high7.1
CVE-2026-45808
OpenBao's cross-namespace lease revocation via legacy sys/revoke path bypasses ACL
Impact
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.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| go | github.com/openbao/openbao | <= 2.5.3 | 2.5.4 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-v8v8-cm84-m686
- https://github.com/openbao/openbao/security/advisories/GHSA-v8v8-cm84-m686
- https://github.com/openbao/openbao/pull/3152
- https://github.com/openbao/openbao/commit/c0495646b41cea0e3f5a1030132e9cf5c2375b5c
- https://github.com/openbao/openbao/releases/tag/v2.5.4