CVE Catalog

CVE-2025-9611

HighCVSS 7.2
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Elevated risk
1.15%

63th percentile - higher than 63% of all known CVEs

Summary

Microsoft Playwright MCP Server versions prior to 0.0.40 fail 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.

Risk Assessment

The risk is that an attacker can remotely execute unauthorized operations on the local MCP server, potentially accessing sensitive data or system functions, which may lead to confidentiality and integrity breaches.

Recommendation

Immediately update Microsoft Playwright MCP Server to version 0.0.40 or later, which includes the Origin header validation fix. Additionally, consider restricting access to the MCP server to trusted sources only.

Related vulnerabilities

Original NVD description (English source)

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.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS