Vulnerability from bitnami_vulndb
Published
2026-08-17 05:50
Modified
2026-08-17 06:10
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.

To clipboard 

{
  "affected": [
    {
      "package": {
        "ecosystem": "Bitnami",
        "name": "openbao",
        "purl": "pkg:bitnami/openbao"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.5.4"
            }
          ],
          "type": "SEMVER"
        }
      ],
      "severity": [
        {
          "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",
          "type": "CVSS_V4"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-45808"
  ],
  "database_specific": {
    "cpes": [
      "cpe:2.3:a:openbao:openbao:*:*:*:*:*:go:*:*"
    ],
    "severity": "High"
  },
  "details": "OpenBao is an open source identity-based secrets management system. Prior to version 2.5.4, OpenBao\u0027s 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.",
  "id": "BIT-openbao-2026-45808",
  "modified": "2026-08-17T06:10:32.268Z",
  "published": "2026-08-17T05:50:21.976Z",
  "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"
    }
  ],
  "schema_version": "1.6.2",
  "summary": "OpenBao\u0027s cross-namespace lease revocation via legacy sys/revoke path bypasses ACL"
}



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