{"id":"CVE-2026-71543","state":"PUBLISHED","title":"OpenBao's Templated Policies Allow Privilege Escalation via Wildcard Characters","description":"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.","publishedAt":"2026-09-21T15:03:59.159Z","updatedAt":"2026-09-25T19:26:50.747Z","severity":{"score":7.5,"label":"High","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["openbao openbao"],"affected":[{"vendor":"openbao","product":"openbao","versions":[{"version":"<2.6.0","status":"affected"}]}],"references":["https://github.com/openbao/openbao/security/advisories/GHSA-59w7-v8rr-pr4p","https://github.com/openbao/openbao/pull/3401","https://github.com/openbao/openbao/pull/3473","https://github.com/openbao/openbao/commit/2d4ebafec5c524408b3d4ac1198df909cb7ac8c1","https://github.com/openbao/openbao/commit/e516ce508e1481504cadbfbf62052364339093bc","https://github.com/hashicorp/vault/blob/main/CHANGELOG.md#201","https://github.com/openbao/openbao/releases/tag/v2.6.0"],"weaknesses":["CWE-863"],"ingestedAt":"2026-10-29T20:12:49.727Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/71xxx/CVE-2026-71543.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-71543","state":"PUBLISHED","datePublished":"2026-09-21T15:03:59.159Z","dateUpdated":"2026-09-25T19:26:50.747Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-08-06T21:24:15.375Z"},"containers":{"cna":{"title":"OpenBao's Templated Policies Allow Privilege Escalation via Wildcard Characters","descriptions":[{"lang":"en","value":"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":[{"vendor":"openbao","product":"openbao","versions":[{"version":"<2.6.0","status":"affected"}]}],"references":[{"url":"https://github.com/openbao/openbao/security/advisories/GHSA-59w7-v8rr-pr4p","name":"https://github.com/openbao/openbao/security/advisories/GHSA-59w7-v8rr-pr4p","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/openbao/openbao/pull/3401","name":"https://github.com/openbao/openbao/pull/3401","tags":["x_refsource_MISC"]},{"url":"https://github.com/openbao/openbao/pull/3473","name":"https://github.com/openbao/openbao/pull/3473","tags":["x_refsource_MISC"]},{"url":"https://github.com/openbao/openbao/commit/2d4ebafec5c524408b3d4ac1198df909cb7ac8c1","name":"https://github.com/openbao/openbao/commit/2d4ebafec5c524408b3d4ac1198df909cb7ac8c1","tags":["x_refsource_MISC"]},{"url":"https://github.com/openbao/openbao/commit/e516ce508e1481504cadbfbf62052364339093bc","name":"https://github.com/openbao/openbao/commit/e516ce508e1481504cadbfbf62052364339093bc","tags":["x_refsource_MISC"]},{"url":"https://github.com/hashicorp/vault/blob/main/CHANGELOG.md#201","name":"https://github.com/hashicorp/vault/blob/main/CHANGELOG.md#201","tags":["x_refsource_MISC"]},{"url":"https://github.com/openbao/openbao/releases/tag/v2.6.0","name":"https://github.com/openbao/openbao/releases/tag/v2.6.0","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"PRESENT","privilegesRequired":"HIGH","userInteraction":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":7.5,"baseSeverity":"HIGH","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-863","lang":"en","description":"CWE-863: Incorrect Authorization","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-09-21T15:03:59.159Z"},"source":{"advisory":"GHSA-59w7-v8rr-pr4p","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-25T19:26:34.934696Z","id":"CVE-2026-71543","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-09-25T19:26:50.747Z"}}]}}}