{
"id": "GHSA-v8v8-cm84-m686",
"aliases": [
"CVE-2026-45808"
],
"details": "# Impact\n\nOpenBao'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.\n\n# Patch\n\nThis will be addressed in v2.5.4.",
"summary": "OpenBao's cross-namespace lease revocation via legacy sys/revoke path bypasses ACL",
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.5.4"
}
]
}
],
"package": {
"name": "github.com/openbao/openbao",
"ecosystem": "Go"
},
"database_specific": {
"last_known_affected_version_range": "<= 2.5.3"
}
}
],
"modified": "2026-05-28T17:37:32Z",
"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"
}
],
"published": "2026-05-28T17:37:32Z",
"references": [
{
"url": "https://github.com/openbao/openbao/security/advisories/GHSA-v8v8-cm84-m686",
"type": "WEB"
},
{
"url": "https://github.com/openbao/openbao/pull/3152",
"type": "WEB"
},
{
"url": "https://github.com/openbao/openbao/commit/c0495646b41cea0e3f5a1030132e9cf5c2375b5c",
"type": "WEB"
},
{
"url": "https://github.com/openbao/openbao",
"type": "PACKAGE"
},
{
"url": "https://github.com/openbao/openbao/releases/tag/v2.5.4",
"type": "WEB"
}
],
"schema_version": "1.4.0",
"database_specific": {
"cwe_ids": [
"CWE-863"
],
"severity": "HIGH",
"github_reviewed": true,
"nvd_published_at": null,
"github_reviewed_at": "2026-05-28T17:37:32Z"
}
}