{"id":"BIT-openbao-2026-45808","summary":"OpenBao's cross-namespace lease revocation via legacy sys/revoke path bypasses ACL","details":"OpenBao is an open source identity-based secrets management system. Prior to version 2.5.4, OpenBao's namespaces provide multi-tenant separation. A tenant who intentionally leaks lease identifiers can have their lease and underlying credential revoked or renewed by a user in another tenant via the legacy, undocumented `sys/revoke` and `sys/renew` endpoints. This is fixed in OpenBao v2.5.4.","aliases":["CVE-2026-45808","GHSA-v8v8-cm84-m686","GO-2026-5657"],"modified":"2026-08-17T08:11:08.650039355Z","published":"2026-08-17T05:50:21.976Z","database_specific":{"cpes":["cpe:2.3:a:openbao:openbao:*:*:*:*:*:go:*:*"],"severity":"High"},"references":[{"type":"WEB","url":"https://github.com/openbao/openbao/commit/c0495646b41cea0e3f5a1030132e9cf5c2375b5c"},{"type":"WEB","url":"https://github.com/openbao/openbao/pull/3152"},{"type":"WEB","url":"https://github.com/openbao/openbao/releases/tag/v2.5.4"},{"type":"WEB","url":"https://github.com/openbao/openbao/security/advisories/GHSA-v8v8-cm84-m686"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-45808"}],"affected":[{"package":{"name":"openbao","ecosystem":"Bitnami","purl":"pkg:bitnami/openbao"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"2.5.4"}]}],"database_specific":{"source":"https://github.com/bitnami/vulndb/tree/main/data/openbao/BIT-openbao-2026-45808.json"},"severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/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"}