{"id":"CVE-2026-103247","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-103247","generatedAt":"2026-10-28T04:35:34.598Z","title":"n8n versions before 1.123.80 contain a credential tampering vulnerability where duplicate node IDs bypass the workflow credential tamper guard.","description":"n8n versions before 1.123.80 contain a credential tampering vulnerability where duplicate node IDs bypass the workflow credential tamper guard. Attackers with editor access to shared workflows can exploit mismatched node ID and name matching to retain victim credentials and redirect secrets to attacker-controlled hosts.","published":"2026-10-01T11:17:18.000Z","lastModified":"2026-10-01T20:17:23.000Z","status":"Deferred","sourceIdentifier":"disclosure@vulncheck.com","cvss":{"version":"4.0","score":5.8,"severity":"MEDIUM","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M"},"cwe":["CWE-639"],"affected":[],"epss":{"score":0.00236,"percentile":0.14572,"date":"2026-10-27","history":[{"date":"2026-10-02","score":0.00236,"percentile":0.13291}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.24%). Track it; it rarely justifies an emergency change on its own."},"changes":[{"kind":"new","label":"New CVE","at":"2026-10-01T11:17:18.000Z","detail":{"score":"5.8","severity":"MEDIUM","publishedAt":"2026-10-01T11:17:18.070Z"},"summary":"New CVE, medium severity (CVSS 5.8)."}],"references":[{"url":"https://github.com/n8n-io/n8n/security/advisories/GHSA-7gjv-rcf8-x5qc","source":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/n8n-before-1.123.80-credential-tampering-via-duplicate-node-ids","source":"disclosure@vulncheck.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-103247","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}