CVE-2026-40264

OpenBao's Token Store Allows Cross-Namespace Renewal, Revocation

State: Published
Severity: 2.0 Low
Published: Apr 21, 2026
Updated: Apr 21, 2026
Reserved: Apr 10, 2026

Description

OpenBao is an open source identity-based secrets management system. OpenBao's namespaces provide multi-tenant separation. Prior to version 2.5.3, a tenant who leaks token accessors can have their token revoked or renewed by a privileged administrator in another tenant. This is addressed in v2.5.3.

Scores

CVSS	Score	Vector	Source
4.0	2.0 Low	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	GitHub_M

Weaknesses

CWE-1259 Improper Restriction of Security Token Assignment

Affected Products

Product	Versions
openbaoopenbao	< 2.5.3Affected

References

https://github.com/openbao/openbao/security/advisories/GHSA-p49j-v9wc-wg57

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