{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-63131", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-07-15T16:54:55.817Z", "datePublished": "2026-09-23T17:59:16.337Z", "dateUpdated": "2026-09-23T17:59:16.337Z"}, "containers": {"cna": {"title": "OpenBao LIST ACL bypass: a trailing-slash LIST request skips a more-specific deny rule (unported Vault v2.0.3 fix)", "problemTypes": [{"descriptions": [{"cweId": "CWE-863", "lang": "en", "description": "CWE-863: Incorrect Authorization", "type": "CWE"}]}], "metrics": [{"cvssV4_0": {"attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "privilegesRequired": "LOW", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "baseScore": 6, "baseSeverity": "MEDIUM", "vectorString": "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", "version": "4.0"}}], "references": [{"name": "https://github.com/openbao/openbao/security/advisories/GHSA-xp3c-3jw3-4vcr", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/openbao/openbao/security/advisories/GHSA-xp3c-3jw3-4vcr"}, {"name": "https://github.com/openbao/openbao/pull/3389", "tags": ["x_refsource_MISC"], "url": "https://github.com/openbao/openbao/pull/3389"}, {"name": "https://github.com/openbao/openbao/pull/3474", "tags": ["x_refsource_MISC"], "url": "https://github.com/openbao/openbao/pull/3474"}, {"name": "https://github.com/openbao/openbao/commit/2e9625d6cebe4639d051ef53dd6ce7c49914ae6a", "tags": ["x_refsource_MISC"], "url": "https://github.com/openbao/openbao/commit/2e9625d6cebe4639d051ef53dd6ce7c49914ae6a"}, {"name": "https://github.com/openbao/openbao/commit/f58d848c139e5ba71aa63103fcfe101972b999fc", "tags": ["x_refsource_MISC"], "url": "https://github.com/openbao/openbao/commit/f58d848c139e5ba71aa63103fcfe101972b999fc"}, {"name": "https://github.com/hashicorp/vault/blob/main/CHANGELOG.md#203", "tags": ["x_refsource_MISC"], "url": "https://github.com/hashicorp/vault/blob/main/CHANGELOG.md#203"}, {"name": "https://github.com/openbao/openbao/releases/tag/v2.6.0", "tags": ["x_refsource_MISC"], "url": "https://github.com/openbao/openbao/releases/tag/v2.6.0"}], "affected": [{"vendor": "openbao", "product": "openbao", "versions": [{"version": "< 2.6.0", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-09-23T17:59:16.337Z"}, "descriptions": [{"lang": "en", "value": "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."}], "source": {"advisory": "GHSA-xp3c-3jw3-4vcr", "discovery": "UNKNOWN"}}}}