{"id":"CVE-2026-118648","title":"n8n before 1.123.85, 2.43.5, and 2.44.1 Stored XSS via Webhook Responses Missing Sandbox Policy","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 responses without headers, omit the sandbox Content-Se…","severity":"high","cvss":7.3,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N","cvssSource":"cna","cwe":["CWE-79"],"vendor":"n8n-io","product":"n8n","affected":["n8n < 1.123.85","n8n >= 2.44.0 < 2.44.1","n8n >= 2.0.0 < 2.43.5"],"published":"2026-10-28","updated":"2026-10-28","sourceUpdated":"2026-10-28T18:59:46.959Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-118648","references":[{"url":"https://github.com/n8n-io/n8n/security/advisories/GHSA-mp7q-23hg-35cf","label":"GitHub Security Advisory (GHSA-mp7q-23hg-35cf)"},{"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","label":"VulnCheck Advisory: n8n before 1.123.85, 2.43.5, and 2.44.1 Stored XSS via Webhook Responses Missing Sandbox Policy"}],"tags":["cve.org"],"epss":0.00259,"epssPercentile":0.17605,"ingestedAt":"2026-10-29T15:37:07.543Z","slug":"CVE-2026-118648","body":"## Overview\n\nn8n 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.\n\n## Affected\n\n- `n8n < 1.123.85`\n- `n8n >= 2.44.0 < 2.44.1`\n- `n8n >= 2.0.0 < 2.43.5`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":40,"depthScoreParts":{"impact":40.2,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}