{"id":"BIT-openbao-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":["CVE-2026-63131","GHSA-xp3c-3jw3-4vcr","GO-2026-6579"],"modified":"2026-10-01T20:55:56.794040591Z","published":"2026-10-01T09:31:09.418Z","database_specific":{"severity":"Medium","cpes":["cpe:2.3:a:openbao:openbao:*:*:*:*:*:go:*:*"]},"references":[{"type":"WEB","url":"https://github.com/hashicorp/vault/blob/main/CHANGELOG.md#203"},{"type":"WEB","url":"https://github.com/openbao/openbao/commit/2e9625d6cebe4639d051ef53dd6ce7c49914ae6a"},{"type":"WEB","url":"https://github.com/openbao/openbao/commit/f58d848c139e5ba71aa63103fcfe101972b999fc"},{"type":"WEB","url":"https://github.com/openbao/openbao/pull/3389"},{"type":"WEB","url":"https://github.com/openbao/openbao/pull/3474"},{"type":"WEB","url":"https://github.com/openbao/openbao/releases/tag/v2.6.0"},{"type":"WEB","url":"https://github.com/openbao/openbao/security/advisories/GHSA-xp3c-3jw3-4vcr"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-63131"}],"affected":[{"package":{"name":"openbao","ecosystem":"Bitnami","purl":"pkg:bitnami/openbao"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"2.6.0"}]}],"database_specific":{"source":"https://github.com/bitnami/vulndb/tree/main/data/openbao/BIT-openbao-2026-63131.json"},"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"}]}],"schema_version":"1.9.0"}