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 invocation of MCP tool endpoints.

CVSS

No CVSS.

References

Link	Resource
https://github.com/JLLeitschuh/security-research/security/advisories/GHSA-8rgw-6xp9-2fg3
https://github.com/microsoft/playwright/commit/1313fbd
https://www.vulncheck.com/advisories/microsoft-playwright-mcp-server-dns-rebinding-via-missing-origin-header-validation

Configurations

No configuration.

History

07 Jan 2026, 12:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-01-07 12:17

Updated : 2026-01-08 18:08

NVD link : CVE-2025-9611

Mitre link : CVE-2025-9611

CVE.ORG link : CVE-2025-9611

JSON object : View

Products Affected

No product.

CWE

CWE-749

Exposed Dangerous Method or Function

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