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CVE-2025-9611

7.2 high SSVC exploitation: poc Deferred
NVD · CVE.org

Microsoft Playwright MCP Server versions prior to 0.0.40 fails to validate the Origin header on incoming connections. This allows an attacker to perform a DNS rebinding attack via a victim’s web browser and send unauthorized requests to a locally running MCP server, resulting in unintended invocation of MCP tool endpoints.

Fix

Nothing published yet: no patch, vendor advisory or mitigation reference on NVD, no vendor advisory in the News for this CVE, not in CISA's KEV, no fixed package version. BaselineWatch does not guess at one.

Change history 1

  1. First seenCVSS 7.2NVD modified 2026-10-08 16:16

Affected (CPE criteria) 0

NVD has not attached CPE configurations yet.

References 3