VULNERABILITY INTELLIGENCE

CVE-2026-59208

CVSS score6.8 MEDIUM
EPSS probability0.27%
CISA KEVNot currently listed
Published2026-07-09
Last modified2026-10-25
CVSS vectorCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N

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.

Weakness classification

  • security-advisories@github.com: CWE-287
  • nvd@nist.gov: CWE-346

Primary references