CVE-2026-40264
EPSS 0.05%OpenBao's Token Store Allows Cross-Namespace Renewal, Revocation
Published: 4/21/2026Modified: 4/23/2026
Description
### Impact OpenBao's namespaces provide multi-tenant separation. A tenant who leaks token accessors can have their token revoked or renewed by a privileged administrator in another tenant. ### Patches This was addressed in v2.5.3.
Affected packages (1)
- Go/github.com/openbao/openbaofrom 0, < 0.0.0-20260420162526-f58111d2ca54
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 4.0 | — | CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N |
References (6)
- ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2026-40264
- PATCHhttps://github.com/openbao/openbao
- WEBhttps://github.com/openbao/openbao/commit/059cc5950303688335d5c8ab9af8e453795d693a
- WEBhttps://github.com/openbao/openbao/pull/2934
- WEBhttps://github.com/openbao/openbao/releases/tag/v2.5.3
- WEBhttps://github.com/openbao/openbao/security/advisories/GHSA-p49j-v9wc-wg57