CVE-2026-71543
Severity not reportedOpenBao is an open source identity-based secrets management system.
OpenBao is an open source identity-based secrets management system. Prior to 2.6.0, templated ACL, PKI, and SSH policies could substitute attacker-controlled identity data without rejecting syntax-significant characters. In ACL templated policies, asterisks, plus signs, and slashes could alter path matching. In PKI allowed_uri_sans_template and allowed_domains policies, an asterisk could broaden certificate issuance to unauthorized domains. In SSH allowed_users and allowed_domains policies, a comma could add unauthorized principals. Exploitation requires a deployment to use templated policy data that users can freely modify; templates based on the randomly generated identity.entity.id value are not affected. This could allow privilege escalation, unauthorized access, and unauthorized certificate issuance. This issue is fixed in version 2.6.0.
Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/hashicorp/vault/blob/main/CHANGELOG.md#201 security-advisories@github.com
- https://github.com/openbao/openbao/commit/2d4ebafec5c524408b3d4ac1198df909cb7ac8c1 security-advisories@github.com
- https://github.com/openbao/openbao/commit/e516ce508e1481504cadbfbf62052364339093bc security-advisories@github.com
- https://github.com/openbao/openbao/pull/3401 security-advisories@github.com
- https://github.com/openbao/openbao/pull/3473 security-advisories@github.com
- https://github.com/openbao/openbao/releases/tag/v2.6.0 security-advisories@github.com
- https://github.com/openbao/openbao/security/advisories/GHSA-59w7-v8rr-pr4p security-advisories@github.com