Crabbox < 0.9.0 Authentication Bypass via Admin Claim Injection

{
  "id": "4fa2bb2c26db6c8140f39919e925bab8415665133b0a679a97f48232466f21fc",
  "url": "https://osv.dev/vulnerability/CVE-2026-45223",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Crabbox < 0.9.0 Authentication Bypass via Admin Claim Injection",
    "summary": "Crabbox before 0.9.0 contains an authentication bypass vulnerability in the coordinator user-token verification path where the verifyUserToken() function fails to reject payloads containing an admin claim, allowing attackers to escalate privileges. An attacker with access to the shared non-admin token can craft a user-token payload with admin: true, sign it using HMAC-SHA256, and present it to admin-only coordinator routes to gain full coordinator admin access including lease visibility, pool state management, and forced release operations.",
    "evidence": "osv:CVE-2026-45223",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-45223",
      "aliases": [
        "CVE-2026-45223"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/openclaw/crabbox",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "b5a3561fa77f8ebdce046bf54841283e96df05c0"
                },
                {
                  "fixed": "46079f6de7f10cf61bc47efebd0c143a41664898"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "0.9.0"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  },
                  {
                    "range": [
                      {
                        "fixed": "b5a3561fa77f8ebdce046bf54841283e96df05c0"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "v0.9.0"
                  },
                  {
                    "range": [
                      {
                        "fixed": "46079f6de7f10cf61bc47efebd0c143a41664898"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v0.8.0",
            "v0.7.0",
            "v0.6.0",
            "v0.5.1",
            "v0.5.0",
            "v0.4.0",
            "v0.3.1",
            "v0.3.0",
            "v0.2.0",
            "v0.1.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-45223.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:26.775012057Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45223.json",
        "https://github.com/openclaw/crabbox/releases/tag/v0.9.0",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-45223",
        "https://www.vulncheck.com/advisories/crabbox-authentication-bypass-via-admin-claim-injection",
        "https://github.com/openclaw/crabbox/pull/64",
        "https://github.com/openclaw/crabbox/commit/46079f6de7f10cf61bc47efebd0c143a41664898",
        "https://github.com/openclaw/crabbox"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-290"
        ],
        "cna_assigner": "VulnCheck",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45223.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-45223",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 493376,
  "published_at": "2026-05-11T18:12:45.838+00:00"
}