Threats Tagged 'cve-2026-9739'
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Threats Tagged 'cve-2026-9739'
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CVE-2026-9739: CWE-942: Permissive Cross-domain Policy with Untrusted Domains in Google MCP Toolbox for DatabasesCVE-2026-9739 0 CVE-2026-9739 is a critical vulnerability in Google MCP Toolbox for Databases related to a permissive cross-domain policy that allows untrusted domains. The issue arises from a hardcoded 'Access-Control-Allow-Origin: *' header in the Server-Sent Events (SSE) initialization handler, which enables DNS rebinding attacks. This affects users connecting via Toolbox using SSE under specification v2024-11-05. The vulnerability is classified under CWE-942 and has a CVSS 4. 0 score of 9. 4, indicating high severity. No official patch or remediation guidance has been provided yet. Join the discussion | CVE Database V5 | 05/27/2026, 21:38:55 UTC Added: 05/27/2026, 22:18:35 UTC |
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