Description
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.
Recommendation
Update the @playwright/mcp package to the latest compatible version. Followings are version details:
- Affected version(s): < 0.0.40
- Patched version(s): 0.0.40
References
Could your website be exposed too?
SmartScanner can check your website for Microsoft Playwright MCP Server vulnerable to DNS Rebinding Attack; Allows Attackers Access to All Server Tools and gives you actionable findings to investigate.
Start a free scanRelated Issues
- MCP Inspector is Vulnerable to Potential Command Execution via XSS When Connecting to an Untrusted MCP Server - CVE-2025-58444
- evershop allows unauthenticated attackers to exhaust application server's resources via "GET /images" API - CVE-2025-67419
- SillyTavern Web Interface Vulnerable DNS Rebinding - CVE-2025-59159
- evershop allows unauthenticated attackers to force server to initiate HTTP request via "GET /images" API - CVE-2025-67427
You might also like:
See something that needs correcting? Let us knowUpdated January 07, 2026