{"id":"EUVD-2026-42258","revision":"bfb7d22a61904ccbb18d4e1ffb89f860","records":[{"revision":"bfb7d22a61904ccbb18d4e1ffb89f860","observedAt":"2026-11-05T11:48:29.506+00:00","statement":{"source":"euvd","id":"EUVD-2026-42258","aliases":["CVE-2026-56360","GHSA-wgjf-2hg5-2533"],"title":"n8n before versions 1.123.18 and 2.6.2 fails to verify HMAC-SHA256 signatures on Zendesk webhooks in the ZendeskTrigger node. Attackers who know the webhook URL can send unsigned POST requests to trigger workflows with arbitrary malicious d…","description":"n8n before versions 1.123.18 and 2.6.2 fails to verify HMAC-SHA256 signatures on Zendesk webhooks in the ZendeskTrigger node. Attackers who know the webhook URL can send unsigned POST requests to trigger workflows with arbitrary malicious data.","state":0,"publishedAt":null,"modifiedAt":null,"affected":[],"metrics":[{"system":"EUVD CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:L/SA:N","score":6.3,"severity":null}],"references":["https://github.com/n8n-io/n8n/security/advisories/GHSA-38c7-23hj-2wgq","https://www.vulncheck.com/advisories/n8n-webhook-forgery-via-unsigned-post-requests-in-zendesktrigger"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-42258","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"Jul 8, 2026, 1:49:03 PM","dateUpdated":"Jul 8, 2026, 2:26:33 PM"},"relatedAdvisories":[{"id":"NCSC-2026-0248","title":"Kwetsbaarheden verholpen in n8n workflow automation platform","vulnerabilityIds":["CVE-2026-27493","CVE-2026-27494","CVE-2026-27495","CVE-2026-27497","CVE-2026-27498","CVE-2026-27577","CVE-2026-27578","CVE-2026-56357","CVE-2026-56350","CVE-2026-56360","CVE-2026-56349","CVE-2026-56353"]}],"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-2026-42258","identifiers":["EUVD-2026-42258","CVE-2026-56360","GHSA-wgjf-2hg5-2533"]},"retained":false,"historicalAffected":[]}],"coverage":[]}