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CVE-2026-9739

🗓️ 27 May 2026 21:38:55Reported by GoogleType 
cve
 cve
🔗 web.nvd.nist.gov👁 48 Views🌐 WEB

SSE uses Access-Control-Allow-Origin: *, enabling DNS rebinding for Toolbox connections (version 2024-11-05).

Related
Detection
Affected
Refs
Paths
Vulners
[
  {
    "vendor": "Google",
    "product": "MCP Toolbox for Databases",
    "versions": [
      {
        "status": "affected",
        "version": "0",
        "lessThan": "PR 3054 (Fix CORS bypass)",
        "versionType": "custom"
      }
    ],
    "defaultStatus": "unaffected"
  }
]
ParameterPositionPathDescriptionCWE
Access-Control-Allow-Originheader/499408790Hardcoded '*' CORS header in SSE initialization handler enabling DNS rebinding.CWE-942

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17 Jun 2026 11:05Current
5.8Medium risk
Vulners AI Score5.8
CVSS 49.4
EPSS0.00279
SSVC
48