CVEvulnerability

CVE-2026-59208

7.6 HIGH Published 2026-07-09 Modified 2026-10-25 Official page ↗
Status
Analyzed
Published
2026-07-09
Last modified
2026-10-25
Assigner
[email protected]
CVSS 4.0 ([email protected])
7.6 HIGH — 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1 ([email protected])
6.8 MEDIUM — CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
Weaknesses
CWE-287, CWE-346

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.

Affected configurations

• n8n n8n (< 2.27.4) • n8n n8n 2.28.0

Related

Weakness · CWE (2)

  • CWE-287 Improper Authentication weakness
  • CWE-346 Origin Validation Error weakness

References