CVE-2026-118644 n8n - Broken Access Control

n8n < 2.41.5 and 2.42.x < 2.42.2 contain an information disclosure caused by passing full execution context including user identity to error workflows, letting project editors access colleague's credentials, exploit requires project editor privileges.

CVSS base score 7.7 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
View the NVD record ↗

Details

Type
Broken Access Control
Impact
Information Disclosure
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N
Published
28 October 2026
Updated
29 October 2026
Weakness
CWE-266

Vendor fix

Upgrade to version 2.41.5 or 2.42.2 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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