CVE-2025-9611

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...

CVE-2025-9611

Microsoft Playwright MCP Server prior to version 0.0.40 is vulnerable due to missing Origin header validation, enabling DNS rebinding attacks that can trigger unauthorized requests to locally running MCP tool endpoints. Affected software: MCP Server versions