CVE-2026-40264
Published:April 21, 2026
Updated:April 23, 2026
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.
Affected Packages
https://github.com/openbao/openbao.git (GITHUB):
Affected version(s) >=v2.0.0-alpha20240329 <v2.5.3Fix Suggestion:
Update to version v2.5.3github.com/openbao/openbao (GO):
Affected version(s) >=api/auth/approle/v0.1.0 <2.5.3Fix Suggestion:
Update to version 2.5.3Related Resources (6)
Do you need more information?
Contact UsCVSS v4
Base Score:
2
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
PRESENT
Privileges Required
HIGH
User Interaction
PASSIVE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
LOW
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
2.4
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
LOW
Weakness Type (CWE)
Improper Restriction of Security Token Assignment
EPSS
Base Score:
0.04
