CVE-2026-40264

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

Published Apr 21, 2026 CVSS 4.0 · 2 Low EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Github GHSA Github GHSA GHSA-p49j-v9wc-wg57 OpenBao's Token Store Allows Cross-Namespace Renewal, Revocation
History
Type Values Removed Values Added
CPEs cpe:2.3:a:openbao:openbao:*:*:*:*:*:*:*:*
Metrics cvssV3_1

{'score': 2.7, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L'}

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Openbao
Openbao openbao
Vendors & Products Openbao
Openbao openbao
Type Values Removed Values Added
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.
Title OpenBao's Token Store Allows Cross-Namespace Renewal, Revocation
Weaknesses CWE-1259
References
Metrics cvssV4_0

{'score': 2, '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'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
Apr 21, 2026, 7:30 PM
Reserved
Apr 10, 2026, 5:31 PM
Status
Analyzed
Published
Apr 21, 2026, 1:16 AM
Modified
Nov 11, 2026, 11:10 PM