{"affected":[{"defaultStatus":"unaffected","ecosystem":"npm","packageName":"%40playwright/mcp","product":"Playwright","source":"CNA: VulnCheck","vendor":"Microsoft","versions":[{"lessThan":"0.0.40","status":"affected","version":"0","versionType":"semver"}]}],"cveId":"CVE-2025-9611","cwes":["CWE-749"],"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.","epss":{"date":"2026-11-08","percentile":0.68923,"score":0.01222},"exploits":[],"kev":null,"metrics":[{"score":7.2,"severity":"high","source":"CNA: VulnCheck","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","version":"4.0"}],"modifiedAt":1794146433786,"publishedAt":1767759853705,"references":[{"source":"CNA: VulnCheck","tags":["vendor-advisory"],"url":"https://github.com/JLLeitschuh/security-research/security/advisories/GHSA-8rgw-6xp9-2fg3"},{"source":"CNA: VulnCheck","tags":["patch"],"url":"https://github.com/microsoft/playwright/commit/1313fbd"},{"source":"CNA: VulnCheck","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/microsoft-playwright-mcp-server-dns-rebinding-via-missing-origin-header-validation"}],"remediation":[{"kind":"fix","source":"CNA: VulnCheck","text":"The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.","url":"https://github.com/microsoft/playwright/commit/1313fbd"}],"revision":"17e52a19456dc37cc8efb67ddef797b894dd8846e0a93685c34e80dd27eff676","sources":[{"modifiedAt":1794146433786,"name":"CNA: VulnCheck","retrievedAt":1794146992845,"url":"https://www.cve.org/CVERecord?id=CVE-2025-9611"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1794150620411,"url":"https://api.first.org/data/v1/epss?cve=CVE-2025-9611"}],"ssvc":{"assessedAt":1767795861005,"automatable":"no","exploitation":"poc","source":"ADP: CISA-ADP","technicalImpact":"partial"},"status":"published","title":"Microsoft Playwright MCP Server < 0.0.40 DNS Rebinding via Missing Origin Header Validation","updatedAt":1794150620411}