CVE-2026-40264 LOW

CVE-2026-40264: OpenBao's Token Store Allows Cross-Namespace Renewal, Revocation

Vendor Openbao
Product openbao
Weakness CWE-1259
Published April 21, 2026
Last update April 21, 2026
View on NVD All CVEs

CVSS base score

2.0/10
Attack vector Network
Attack complexity Low
Privileges required High
User interaction —
Confidentiality —
Integrity —

CVSS vector

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

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

April 21, 2026 CVE published
April 21, 2026 Record updated