{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "2.5.4"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "c0495646b41cea0e3f5a1030132e9cf5c2375b5c"
            },
            {
              "fixed": "4f6d47246a053375271a5fd8af85c3b75695aa46"
            }
          ],
          "repo": "https://github.com/openbao/openbao",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-v8v8-cm84-m686"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-863"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45808.json"
  },
  "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.",
  "id": "CVE-2026-45808",
  "modified": "2026-08-12T03:51:48.451772007Z",
  "published": "2026-08-07T21:15:00.733Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/openbao/openbao/releases/tag/v2.5.4"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45808.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/openbao/openbao/security/advisories/GHSA-v8v8-cm84-m686"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-45808"
    },
    {
      "type": "FIX",
      "url": "https://github.com/openbao/openbao/commit/c0495646b41cea0e3f5a1030132e9cf5c2375b5c"
    },
    {
      "type": "FIX",
      "url": "https://github.com/openbao/openbao/pull/3152"
    }
  ],
  "schema_version": "1.9.0",
  "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",
      "type": "CVSS_V4"
    }
  ],
  "summary": "OpenBao's cross-namespace lease revocation via legacy sys/revoke path bypasses ACL"
}