{"answers":{"affected":"2 open source packages ship an affected version, including @playwright/mcp.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-9611 exists.","fix":"Upgrade @playwright/mcp to 0.0.40 or later.","what":"CVE-2025-9611 is a high-severity missing authorization vulnerability in Microsoft Playwright, published on 7 Jan 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2025-9611 and fix it if it is affected.\n\nWhat it is: CVE-2025-9611 is a high-severity missing authorization vulnerability in Microsoft Playwright, published on 7 Jan 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-9611 exists.\n\nAffected packages and fixed versions:\n- @playwright/mcp (npm): affected all versions; fixed in 0.0.40\n- @playwright/mcp (npm): affected all versions; fixed in 0.0.40\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2025-9611/ (Markdown: https://insights.sbomify.com/CVE-2025-9611/index.md)","id":"CVE-2025-9611","markdown":"https://insights.sbomify.com/CVE-2025-9611/index.md","name":"CVE-2025-9611","record":{"aliases":["GHSA-6fg3-hvw7-2fwq","GHSA-8rgw-6xp9-2fg3"],"analysis":{"component_type":"developer_tool","fix_type":"upgrade","impacts":["code_execution","security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"Playwright MCP Server","requires_auth":"none","summary":"Attackers can bypass origin checks to invoke MCP tools via DNS rebinding, potentially executing code or bypassing security controls.","user_interaction":"required","vuln_class":"missing_authorization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulnCheck","cpe":[],"cvss":{"score":7.2,"severity":"high","source":"cna","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"},"cwes":[{"id":"CWE-749","name":"Exposed Dangerous Method or Function"}],"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.","ecosystems":["npm"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"Microsoft Playwright MCP Server \u003c 0.0.40 DNS Rebinding via Missing Origin Header Validation","id":"CVE-2025-9611","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"npm","product":null,"products":[],"type":"missing_authorization","year":"2025"},"n_packages":2,"n_references":3,"next":{"headline":"CVE-2025-9612","id":"CVE-2025-9612"},"packages":[{"ecosystem":"npm","fixed":["0.0.40"],"introduced":["0"],"last_affected":[],"package":"@playwright/mcp","purl":null,"source":"GHSA-6fg3-hvw7-2fwq"},{"ecosystem":"npm","fixed":["0.0.40"],"introduced":["0"],"last_affected":[],"package":"@playwright/mcp","purl":"pkg:npm/%40playwright/mcp","source":"GHSA-6fg3-hvw7-2fwq"}],"prev":{"headline":"code-projects Online Event Judging System create_account.php sql injection","id":"CVE-2025-9610"},"products":["Playwright"],"published":"2026-01-07","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-10-08","vendors":["Microsoft"]},"summary":"Attackers can bypass origin checks to invoke MCP tools via DNS rebinding, potentially executing code or bypassing security controls.","url":"https://insights.sbomify.com/CVE-2025-9611/"}