Auth bypass in Openbao
CVE-2026-115365
OpenBao from 2.3.0 before 2.6.3 contains an incorrect authorization vulnerability in its ACL policy cache that allows tokens to reference policies from arbitrary namespaces using specially crafted policy names. Attackers holding such tokens can gain capabilities of cached policies in other namespaces, including the root namespace, to act across namespace boundaries.
Vulnerability class: Broken Access Control
Published .
CVSS v3 metric
CVSS v3 base score 6.6 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/openbao/openbao/security/advisories/GHSA-mjch-vcw3-hhmf (vendor-advisory)
- www.vulncheck.com/advisories/openbao-2.3.0-before-2.6.3-incorrect-authorization… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-115365?
- CVE-2026-115365 is a medium-severity vulnerability in Openbao, classified under Incorrect Authorization. CVSS score: 6.6/10. Published 2026-10-22.
- How severe is CVE-2026-115365?
- Medium severity. CVSS v3 base score is 6.6 out of 10.