{"cve":"CVE-2026-59208","nvd":{"published":"2026-07-09T16:16:46.610","modified":"2026-10-25T17:10:00.197","status":"Analyzed","description":"n8n is an open source workflow automation platform. Prior to 2.27.4 and from 2.28.0 prior to 2.28.1, n8n instances configured with more than one trusted token-exchange issuer resolved external identities to local accounts using only the JWT sub claim and ignored the iss claim, allowing an attacker with a valid token from one trusted issuer and a sub matching a victim under another issuer to authenticate as that victim. This issue is fixed in versions 2.27.4 and 2.28.1.","cvss_v4":{"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","score":7.6},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N","score":6.8},"cwes":["CWE-346","CWE-287"],"references":["https://github.com/n8n-io/n8n/releases/tag/n8n%402.27.4","https://github.com/n8n-io/n8n/releases/tag/n8n%402.28.1","https://github.com/n8n-io/n8n/security/advisories/GHSA-mq3m-f8x3-579w"],"products":["n8n:n8n"],"source":"nvd","synced_at":"2026-10-25T17:50:06.907763985+00:00"},"epss":{"cve":"CVE-2026-59208","score":0.00265,"percentile":0.18237,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-mq3m-f8x3-579w","url":"https://osv.dev/vulnerability/GHSA-mq3m-f8x3-579w","summary":"n8n: Cross-Issuer Token Exchange Account Binding via Subject-Only Identity Resolution","modified":"2026-07-22T22:16:06.823817504Z","packages":[{"ecosystem":"npm","name":"n8n","purl":"pkg:npm/n8n","ranges":[">=2.28.0 <2.28.1"],"fixed":["2.28.1"]},{"ecosystem":"npm","name":"n8n","purl":"pkg:npm/n8n","ranges":["<2.27.4"],"fixed":["2.27.4"]}]}],"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."]}