CVE-2026-45808
OpenBao's cross-namespace lease revocation via legacy sys/revoke path bypasses ACL
Published: 5/28/2026Modified: 5/28/2026
Description
# Impact 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. # Patch This will be addressed in v2.5.4.
Affected packages (1)
- Go/github.com/openbao/openbaofrom 0, < 2.5.4
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 4.0 | — | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N |
References (5)
- PATCHhttps://github.com/openbao/openbao
- WEBhttps://github.com/openbao/openbao/commit/c0495646b41cea0e3f5a1030132e9cf5c2375b5c
- WEBhttps://github.com/openbao/openbao/pull/3152
- WEBhttps://github.com/openbao/openbao/releases/tag/v2.5.4
- WEBhttps://github.com/openbao/openbao/security/advisories/GHSA-v8v8-cm84-m686