{"cve":"CVE-2026-56358","nvd":{"published":"2026-06-24T13:16:36.613","modified":"2026-10-29T19:17:22.690","status":"Analyzed","description":"n8n before 1.123.25 (1.x) and before 2.11.2 (2.x), with the fix also included in 2.12.0, contains a stored cross-site scripting vulnerability in the Form Trigger node's CSS sanitization that allows authenticated users to inject malicious scripts. Attackers with workflow creation permissions can inject XSS payloads that execute persistently for all form visitors, enabling form hijacking and phishing attacks.","cvss_v4":{"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N","score":5.1},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","score":5.4},"cwes":["CWE-79"],"references":["https://github.com/n8n-io/n8n/security/advisories/GHSA-q4fm-pjq6-m63g","https://www.vulncheck.com/advisories/n8n-stored-cross-site-scripting-in-form-trigger-node"],"products":["n8n:n8n"],"source":"nvd","synced_at":"2026-10-29T19:44:52.144667018+00:00"},"epss":{"cve":"CVE-2026-56358","score":0.00243,"percentile":0.15476,"date":"2026-10-29"},"kev":null,"osv":[{"id":"GHSA-q4fm-pjq6-m63g","url":"https://osv.dev/vulnerability/GHSA-q4fm-pjq6-m63g","summary":"n8n has a Stored XSS Vulnerability in its Form Trigger","modified":"2026-07-20T21:46:41.390583299Z","packages":[{"ecosystem":"npm","name":"n8n","purl":"pkg:npm/n8n","ranges":[">=2.0.0-rc.0 <2.11.2"],"fixed":["2.11.2"]},{"ecosystem":"npm","name":"n8n","purl":"pkg:npm/n8n","ranges":["<1.123.25"],"fixed":["1.123.25"]}]}],"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."]}