What is CVE-2026-40264?

CVE-2026-40264 is a low-severity vulnerability in Openbao, classified under CWE-1259. CVSS score: 2.7/10. Published 2026-04-21.

How severe is CVE-2026-40264?

Low severity. CVSS v3 base score is 2.7 out of 10.

Vulnerability in Openbao

CVE-2026-40264

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 ad…

EPSS: 0.003 (22.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 2.7 (Low). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L.

Affected products

Openbao — versions < 2.5.3

Weakness classification (CWE)

CWE-1259

References

security-advisories@github.com (x_refsource_CONFIRM, Vendor Advisory)

Frequently asked questions

What is CVE-2026-40264?: CVE-2026-40264 is a low-severity vulnerability in Openbao, classified under CWE-1259. CVSS score: 2.7/10. Published 2026-04-21.
How severe is CVE-2026-40264?: Low severity. CVSS v3 base score is 2.7 out of 10.