{"cve":"CVE-2025-9611","nvd":{"published":"2026-01-07T12:17:06.697","modified":"2026-10-08T16:16:54.920","status":"Deferred","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.","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":7.2},"cvss_v3":null,"cwes":["CWE-749"],"references":["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"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:19:41.481987139+00:00"},"epss":{"cve":"CVE-2025-9611","score":0.01222,"percentile":0.68517,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-6fg3-hvw7-2fwq","url":"https://osv.dev/vulnerability/GHSA-6fg3-hvw7-2fwq","summary":"Microsoft Playwright MCP Server vulnerable to DNS Rebinding Attack; Allows Attackers Access to All Server Tools","modified":"2026-02-03T03:16:20.816333Z","packages":[{"ecosystem":"npm","name":"@playwright/mcp","purl":"pkg:npm/%40playwright/mcp","ranges":["<0.0.40"],"fixed":["0.0.40"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}