{"id":"EUVD-2026-38468","revision":"c9a6fcd5070d469c816e42cc9d6dccb1","records":[{"revision":"c9a6fcd5070d469c816e42cc9d6dccb1","observedAt":"2026-10-30T09:51:06.053+00:00","statement":{"source":"euvd","id":"EUVD-2026-38468","aliases":["CVE-2026-54309","GHSA-qrx8-25qr-5r7v"],"title":"n8n is an open source workflow automation platform. Prior to 2.25.7 and 2.26.2, when @n8n/mcp-browser is run in HTTP transport mode, the MCP endpoint accepts session initialization and tool invocation requests without any authentication. An…","description":"n8n is an open source workflow automation platform. Prior to 2.25.7 and 2.26.2, when @n8n/mcp-browser is run in HTTP transport mode, the MCP endpoint accepts session initialization and tool invocation requests without any authentication. Any network-reachable client, or any website visited by the user, can establish an MCP session and invoke browser-control tools. Where the n8n AI Browser Bridge extension is installed and a browser connection is active, an unauthenticated caller can access browser-control capabilities including navigation, JavaScript evaluation, and cookie and storage access against the user's real browser profile. This issue only affects instances where @n8n/mcp-browser is run with the HTTP transport (--transport http). This vulnerability is fixed in 2.25.7 and 2.26.2.","state":0,"publishedAt":null,"modifiedAt":null,"affected":[],"metrics":[{"system":"EUVD CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:L/SC:N/SI:N/SA:N","score":8.8,"severity":null}],"references":["https://github.com/n8n-io/n8n/security/advisories/GHSA-qrx8-25qr-5r7v"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-38468","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"Jun 23, 2026, 3:36:13 PM","dateUpdated":"Jun 23, 2026, 3:45:15 PM"},"relatedAdvisories":[{"id":"NCSC-2026-0212","title":"Kwetsbaarheden verholpen in n8n workflow automation platform","vulnerabilityIds":["CVE-2026-54301","CVE-2026-54302","CVE-2026-54304","CVE-2026-54305","CVE-2026-54306","CVE-2026-54307","CVE-2026-54308","CVE-2026-54309","CVE-2026-54310","CVE-2026-54311","CVE-2026-54312","CVE-2026-54313","CVE-2026-54314","CVE-2026-54303"]}],"note":"EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON."},"key":"euvd:EUVD-2026-38468","identifiers":["EUVD-2026-38468","CVE-2026-54309","GHSA-qrx8-25qr-5r7v"]},"retained":false,"historicalAffected":[]}],"coverage":[]}