DNS CVE-2025-9611
GHSA-6fg3-hvw7-2fwq
Lifecycle Timeline
3Blast Radius
ecosystem impact- 4 npm packages depend on @playwright/mcp (4 direct, 0 indirect)
Ecosystem-wide dependent count for version 0.0.40.
DescriptionNVD
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.
AnalysisAI
Microsoft Playwright MCP Server versions up to 0.0.40 contains a vulnerability that allows attackers to perform a DNS rebinding attack via a victim’s web browser and send unauthorized.
Technical ContextAI
affects Microsoft Playwright MCP Server. 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.
Affected ProductsAI
Product: Microsoft Playwright MCP Server. Versions: up to 0.0.40.
RemediationAI
Monitor vendor advisories for a patch.
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