{"id":"CVE-2026-71543","title":"OpenBao is an open source identity-based secrets management system","summary":"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…","severity":"high","cvss":7.2,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-863"],"vendor":"openbao","product":"github.com/openbao/openbao","affected":["github.com/openbao/openbao < 0.0.0-20260710001938-2d4ebafec5c5","github.com/openbao/openbao >= 0.1.0, <= 1.1.5"],"patched":["github.com/openbao/openbao 0.0.0-20260710001938-2d4ebafec5c5"],"published":"2026-09-21","updated":"2026-09-25","sourceUpdated":"2026-09-25T20:17:46.773","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-71543","references":[{"url":"https://github.com/hashicorp/vault/blob/main/CHANGELOG.md#201","label":"security-advisories@github.com"},{"url":"https://github.com/openbao/openbao/commit/2d4ebafec5c524408b3d4ac1198df909cb7ac8c1","label":"security-advisories@github.com"},{"url":"https://github.com/openbao/openbao/commit/e516ce508e1481504cadbfbf62052364339093bc","label":"security-advisories@github.com"},{"url":"https://github.com/openbao/openbao/pull/3401","label":"security-advisories@github.com"},{"url":"https://github.com/openbao/openbao/pull/3473","label":"security-advisories@github.com"},{"url":"https://github.com/openbao/openbao/releases/tag/v2.6.0","label":"security-advisories@github.com"},{"url":"https://github.com/openbao/openbao/security/advisories/GHSA-59w7-v8rr-pr4p","label":"security-advisories@github.com"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-71543"},{"url":"https://github.com/advisories/GHSA-59w7-v8rr-pr4p"},{"url":"https://github.com/openbao/openbao"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-71543.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-71543"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-71543"}],"tags":["nvd","ghsa","go","osv","csaf","vex","red-hat","cve.org"],"epss":0.00421,"epssPercentile":0.36279,"aliases":["GHSA-59w7-v8rr-pr4p","BIT-openbao-2026-71543","GO-2026-6556"],"ecosystem":"go","ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-09-25T19:26:34.934696Z"},"cvssSource":"vendor","scores":{"vendor":7.2,"cna":7.5},"ingestedAt":"2026-09-21T15:19:25.701Z","slug":"CVE-2026-71543","body":"## Overview\n\nOpenBao 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Package advisory (CVE-2026-71543)\n\nAffected packages:\n\n- `github.com/openbao/openbao < 0.0.0-20260710001938-2d4ebafec5c5`\n- `github.com/openbao/openbao >= 0.1.0, <= 1.1.5`\n\nPatched in:\n\n- `github.com/openbao/openbao 0.0.0-20260710001938-2d4ebafec5c5`\n\nSource: https://github.com/advisories/GHSA-59w7-v8rr-pr4p\n\n## Vendor advisories\n\n- **Red Hat VEX** · updated 2026-09-23 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-71543.json)","depth":"twilight","depthScore":40,"depthScoreParts":{"impact":39.6,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[{"seq":210026,"id":"CVE-2026-71543","ts":1790235657321,"field":"cvss","old":null,"new":"7.2"},{"seq":209393,"id":"CVE-2026-71543","ts":1790111555582,"field":"severity","old":"none","new":"high"}]}