Vulnerability · Published Oct 22, 2026 · Assigned by VulnCheck
CVE-2026-115369OpenBao 2.5.0 before 2.6.2 PKI allowed_ip_sans_cidr Bypass via CSR IP SANs
Low 2.2
In plain English
A low-severity incorrect authorization in openbao from openbao. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 3% of all known vulnerabilities).
Severity (CVSS 3.1)2.2Low
Exploit odds (30 days)0.1%top 97.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
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.
Affected products (as reported)
Weakness: CWE-863 · Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:L/A:N
References
- GitHub Security Advisory (GHSA-g892-p242-8g86) vendor-advisory
- VulnCheck Advisory: OpenBao 2.5.0 before 2.6.2 PKI allowed_ip_sans_cidr Bypass via CSR IP SANs third-party-advisory