Auth bypass in Openbao
CVE-2026-115369
OpenBao from 2.5.0 before 2.6.2 fails to enforce the PKI role allowed_ip_sans_cidr restriction on IP SANs taken from a CSR when use_csr_sans is enabled. Authenticated callers with sign permission can submit a CSR with an out-of-range IP SAN to pki/sign/<role> and obtain CA-signed certificates for unauthorized IPs.
Vulnerability class: Broken Access Control
Published .
CVSS v3 metric
CVSS v3 base score 2.2 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:L/A:N.
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-g892-p242-8g86 (vendor-advisory)
- www.vulncheck.com/advisories/openbao-2.5.0-before-2.6.2-pki-allowed-ip-sans-cid… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-115369?
- CVE-2026-115369 is a low-severity vulnerability in Openbao, classified under Incorrect Authorization. CVSS score: 2.2/10. Published 2026-10-22.
- How severe is CVE-2026-115369?
- Low severity. CVSS v3 base score is 2.2 out of 10.