{"id":"CVE-2026-63131","summary":"OpenBao LIST ACL bypass: a trailing-slash LIST request skips a more-specific deny rule (unported Vault v2.0.3 fix)","details":"OpenBao is an open source identity-based secrets management system. Prior to 2.6.0, OpenBao's vault/policy/acl.go could evaluate a broader wildcard ACL grant before more-specific trailing-wildcard ACL paths with capabilities = [\"deny\"] for a LIST operation. When a parent path permitted LIST and a child path was denied, the trailing-slash lookup could therefore allow listing the denied path. Other operation types are outside the repository advisory's affected scope. This issue is fixed in version 2.6.0.","aliases":["GHSA-xp3c-3jw3-4vcr"],"modified":"2026-09-26T03:30:15.227426638Z","published":"2026-09-23T17:59:16.337Z","database_specific":{"cna_assigner":"GitHub_M","cwe_ids":["CWE-863"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63131.json"},"references":[{"type":"WEB","url":"https://github.com/hashicorp/vault/blob/main/CHANGELOG.md#203"},{"type":"WEB","url":"https://github.com/openbao/openbao/releases/tag/v2.6.0"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63131.json"},{"type":"ADVISORY","url":"https://github.com/openbao/openbao/security/advisories/GHSA-xp3c-3jw3-4vcr"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-63131"},{"type":"FIX","url":"https://github.com/openbao/openbao/commit/2e9625d6cebe4639d051ef53dd6ce7c49914ae6a"},{"type":"FIX","url":"https://github.com/openbao/openbao/commit/f58d848c139e5ba71aa63103fcfe101972b999fc"},{"type":"FIX","url":"https://github.com/openbao/openbao/pull/3389"},{"type":"FIX","url":"https://github.com/openbao/openbao/pull/3474"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/openbao/openbao","events":[{"introduced":"0"},{"fixed":"2e9625d6cebe4639d051ef53dd6ce7c49914ae6a"},{"fixed":"f58d848c139e5ba71aa63103fcfe101972b999fc"},{"fixed":"03e3a243b6f07d17c60ce0a182adee7cf4c424eb"}],"database_specific":{"source":["AFFECTED_FIELD","REFERENCES"],"extracted_events":[{"introduced":"0"},{"fixed":"2.6.0"}]}}],"versions":["sdk/v2.6.1","v2.6.0-beta20260622","sdk/v2.6.0","api/v2.6.0","api/auth/userpass/v2.6.0","api/auth/ldap/v2.6.0","api/auth/kubernetes/v2.6.0","api/auth/jwt/v2.6.0","api/auth/approle/v2.6.0","v2.5.0-beta20251125","sdk/v2.5.0","api/v2.5.0","api/auth/userpass/v2.5.0","api/auth/ldap/v2.5.0","api/auth/kubernetes/v2.5.0","api/auth/jwt/v2.5.0","api/auth/approle/v2.5.0","v2.4.0","sdk/v2.4.0","api/v2.4.0","api/auth/userpass/v2.4.0","api/auth/ldap/v2.4.0","api/auth/kubernetes/v2.4.0","api/auth/jwt/v2.4.0","api/auth/approle/v2.4.0","v2.3.0-beta20250528","sdk/v2.3.0","api/v2.3.0","api/auth/userpass/v2.3.0","api/auth/ldap/v2.3.0","api/auth/kubernetes/v2.3.0","api/auth/approle/v2.3.0","dev-namespaces-base-20250424","dev-namespaces-base-20250311","v2.2.0-beta20250213","dev-namespaces-base-20250215","sdk/v2.2.0","api/v2.2.0","api/auth/userpass/v2.2.0","api/auth/ldap/v2.2.0","api/auth/kubernetes/v2.2.0","api/auth/approle/v2.2.0","v2.1.0-beta20241114.3","v2.1.0-beta20241114.2","v2.1.0-beta20241114.1","v2.1.0-beta20241114","sdk/v2.1.0","api/v2.1.0","v2.0.0","sdk/v2.0.1","api/v2.0.1","api/auth/userpass/v2.0.1","api/auth/ldap/v2.0.1","api/auth/kubernetes/v2.0.1","api/auth/approle/v2.0.1","v2.0.0-beta20240618","sdk/v1.100.0-development20240408","api/v1.100.0-development20240408","api/auth/userpass/v1.1.0-development20240408","api/auth/ldap/v1.1.0-development20240408","api/auth/kubernetes/v1.1.0-development20240408","api/auth/gcp/v1.1.0-development20240408","api/auth/azure/v1.1.0-development20240408","api/auth/aws/v1.1.0-development20240408","api/auth/approle/v1.1.0-development20240408","v2.0.0-alpha20240329","before-plugin-removal","api/auth/userpass/v0.4.1","api/auth/gcp/v0.4.1","api/auth/azure/v0.4.1","api/auth/aws/v0.4.1","api/auth/approle/v0.4.1","sdk/v0.9.1","api/v1.9.2","api/v1.9.1","sdk/v0.9.0","api/auth/userpass/v0.4.0","api/auth/gcp/v0.4.0","api/auth/azure/v0.4.0","api/auth/aws/v0.4.0","api/auth/approle/v0.4.0","sdk/v0.8.0","api/v1.9.0","api/v1.8.3","sdk/v0.7.0","sdk/v0.6.2","sdk/v0.6.1","api/v1.8.2","api/v1.8.1","api/auth/userpass/v0.3.0","api/auth/gcp/v0.3.0","api/auth/azure/v0.3.0","api/auth/aws/v0.3.0","api/auth/approle/v0.3.0","api/v1.8.0","sdk/v0.6.0","api/auth/userpass/v0.2.0","api/auth/gcp/v0.2.0","api/auth/azure/v0.2.0","api/auth/aws/v0.2.0","api/auth/approle/v0.2.0","sdk/v0.5.3","api/v1.7.2","sdk/v0.5.1","api/v1.7.1","api/v1.7.0","api/v1.6.0","sdk/v0.5.0","api/v1.5.0","sdk/v0.4.1","api/v1.3.1","api/auth/approle/v0.1.1","api/auth/gcp/v0.1.0","api/auth/azure/v0.1.0","api/auth/userpass/v0.1.0","api/auth/aws/v0.1.0","api/auth/approle/v0.1.0","sdk/v0.3.0","api/v1.2.0","api/v1.1.1","sdk/v0.2.1","api/v1.0.4","sdk/v0.1.13","api/v1.0.3","sdk/v0.1.12","sdk/v0.1.11","sdk/v0.1.10","api/v1.0.2","sdk/v0.1.9","api/v1.0.1","sdk/v0.1.8"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-63131.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N"}]}