{"cve":"CVE-2026-42226","nvd":{"published":"2026-05-04T19:16:04.563","modified":"2026-06-17T10:47:32.500","status":"Analyzed","description":"n8n is an open source workflow automation platform. Prior to versions 1.123.33 and 2.17.5, the dynamic-node-parameters endpoints did not verify whether the authenticated caller was authorized to use a supplied credential reference. An authenticated user with access to a shared workflow could supply a foreign credential ID in the request body, causing the backend to decrypt and use that credential in a helper execution path where the caller also controls the destination URL. This allowed the caller to force the backend to authenticate against attacker-controlled infrastructure using a credential belonging to another user, effectively exfiltrating a reusable API key. The issue is not limited to any single node type; any node that resolves credentials dynamically through these endpoints may be affected. This issue has been patched in versions 1.123.33, 2.17.5, and 2.18.0.","cvss_v4":{"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:L/SC:L/SI:L/SA:L","score":7.1},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","score":7.5},"cwes":["CWE-862"],"references":["https://github.com/n8n-io/n8n/security/advisories/GHSA-r4v6-9fqc-w5jr"],"products":["n8n:n8n"],"source":"nvd","synced_at":"2026-10-19T22:33:09.003606135+00:00"},"epss":{"cve":"CVE-2026-42226","score":0.0026,"percentile":0.17703,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-r4v6-9fqc-w5jr","url":"https://osv.dev/vulnerability/GHSA-r4v6-9fqc-w5jr","summary":"n8n's Credential Authorization Bypass in dynamic-node-parameters Allows Foreign API Key Replay","modified":"2026-05-08T01:51:10.519247Z","packages":[{"ecosystem":"npm","name":"n8n","purl":"pkg:npm/n8n","ranges":[">=2.17.0 <2.17.5"],"fixed":["2.17.5"]},{"ecosystem":"npm","name":"n8n","purl":"pkg:npm/n8n","ranges":["<1.123.33"],"fixed":["1.123.33"]}]}],"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."]}