{"id":"CVE-2026-118648","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-118648","summary":"n8n before 1.123.85, 2.x before 2.43.5, and 2.44.x before 2.44.1 contains a stored cross-site scripting vulnerability because some webhook response paths, such as error responses and…","details":"n8n before 1.123.85, 2.x before 2.43.5, and 2.44.x before 2.44.1 contains a stored cross-site scripting vulnerability because some webhook response paths, such as error responses and responses without headers, omit the sandbox Content-Security-Policy. Authenticated members who can create and activate workflows can serve HTML that runs on the n8n origin, letting scripts act with the session of users who open the webhook URL.","published":"2026-10-28T19:17:33.093","modified":"2026-10-28T19:17:33.213","cvss":{"score":7.3,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[],"fix":null,"references":[{"type":"WEB","url":"https://github.com/n8n-io/n8n/security/advisories/GHSA-mp7q-23hg-35cf"},{"type":"WEB","url":"https://www.vulncheck.com/advisories/n8n-before-1.123.85-2.43.5-and-2.44.1-stored-xss-via-webhook-responses-missing-sandbox-policy"}],"provenance":{"sources":["OSV.dev","NVD","FIRST.org (EPSS)"],"lastVerified":"2026-10-28T19:17:33.213"}}