{"id":"GHSA-6fg3-hvw7-2fwq","revision":"b64d19b7c4b7497d94085c6472f71827","records":[{"revision":"b64d19b7c4b7497d94085c6472f71827","observedAt":"2026-10-24T13:17:17.793+00:00","statement":{"source":"osv","id":"GHSA-6fg3-hvw7-2fwq","aliases":["CVE-2025-9611","GHSA-8rgw-6xp9-2fg3"],"title":"Microsoft Playwright MCP Server vulnerable to DNS Rebinding Attack; Allows Attackers Access to All Server Tools","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.","state":0,"publishedAt":"2026-01-07T12:31:25+00:00","modifiedAt":"2026-02-03T03:16:20.816333+00:00","affected":[{"ecosystem":"npm","name":"@playwright/mcp","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"},{"kind":"fixed","version":"0.0.40"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V4","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:H/SC:L/SI:L/SA:L","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"HIGH"}],"references":["https://github.com/JLLeitschuh/security-research/security/advisories/GHSA-8rgw-6xp9-2fg3","https://nvd.nist.gov/vuln/detail/CVE-2025-9611","https://github.com/microsoft/playwright-mcp/issues/1206","https://github.com/microsoft/playwright/commit/1313fbd","https://github.com/microsoft/playwright-mcp","https://msrc.microsoft.com/report/vulnerability/VULN-164412","https://www.vulncheck.com/advisories/microsoft-playwright-mcp-server-dns-rebinding-via-missing-origin-header-validation"],"sourceUrl":"https://github.com/advisories/GHSA-6fg3-hvw7-2fwq","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-6fg3-hvw7-2fwq","identifiers":["GHSA-6fg3-hvw7-2fwq","CVE-2025-9611","GHSA-8rgw-6xp9-2fg3"]},"retained":false,"historicalAffected":[]}],"coverage":[]}