{"cve":"CVE-2026-56348","nvd":{"published":"2026-06-22T22:16:52.353","modified":"2026-06-24T16:46:14.657","status":"Analyzed","description":"n8n before 2.20.0 contains a credential exfiltration vulnerability in the POST /rest/dynamic-node-parameters/options endpoint that allows authenticated users to bypass Allowed HTTP Request Domains restrictions. Attackers with credential access can cause the n8n server to issue HTTP requests with credentials to unauthorized hosts, exfiltrating sensitive authentication data.","cvss_v4":{"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:L/SI:L/SA:L","score":5.3},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","score":9.9},"cwes":["CWE-918"],"references":["https://github.com/n8n-io/n8n/security/advisories/GHSA-3875-8gcx-7v46","https://www.vulncheck.com/advisories/n8n-credential-exfiltration-via-allowed-http-request-domains-bypass-in-dynamic-node-parameters-endpoint"],"products":["n8n:n8n"],"source":"nvd","synced_at":"2026-10-19T22:39:28.638635428+00:00"},"epss":{"cve":"CVE-2026-56348","score":0.00482,"percentile":0.41582,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-3875-8gcx-7v46","url":"https://osv.dev/vulnerability/GHSA-3875-8gcx-7v46","summary":"n8n: Credential exfiltration via Allowed HTTP Request Domains Bypass","modified":"2026-07-20T13:45:33.664217554Z","packages":[{"ecosystem":"npm","name":"n8n","purl":"pkg:npm/n8n","ranges":["<2.20.0"],"fixed":["2.20.0"]}]}],"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."]}