CVE-2026-45808
OpenBao's cross-namespace lease revocation via legacy sys/revoke path bypasses ACL
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-863 |
| Vendor | openbao |
| Product | openbao |
| Published | Aug 7, 2026 |
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Affected Versions
openbao / openbao
< 2.5.4
References
github.com: https://github.com/openbao/openbao/security/advisories/GHSA-v8v8-cm84-m686 github.com: https://github.com/openbao/openbao/pull/3152 github.com: https://github.com/openbao/openbao/commit/c0495646b41cea0e3f5a1030132e9cf5c2375b5c github.com: https://github.com/openbao/openbao/releases/tag/v2.5.4