high7.2
CVE-2025-9611
Microsoft Playwright MCP Server vulnerable to DNS Rebinding Attack; Allows Attackers Access to All Server Tools
Impact
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 packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| npm | @playwright/mcp | < 0.0.40 | 0.0.40 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Microsoft | Microsoft Playwright MCP Server | before 0.0.40 |
Versions were read from the advisory text. No structured product data has been published for this record yet.
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- 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
- https://github.com/advisories/GHSA-6fg3-hvw7-2fwq
- https://nvd.nist.gov/vuln/detail/CVE-2025-9611
- https://github.com/microsoft/playwright-mcp/issues/1206
- https://msrc.microsoft.com/report/vulnerability/VULN-164412