CVE-2026-103251 n8n - Authentication Bypass & Remote Code Execution

n8n < 1.123.80, 2.0.0 < 2.39.6, and 2.40.0 < 2.40.1 contain a validation bypass caused by improper checks in the community package installation handler for queue mode deployments, letting attackers with Redis write access install arbitrary npm packages without authentication.

CVSS base score 7.1 /10
High
CISA KEV
Not listed
Public exploit
None known
EPSS
0.20% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Authentication Bypass
Impact
Remote Code Execution
CVSS vector
CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Published
1 October 2026
Updated
15 October 2026
Weakness
CWE-862

Vendor fix

Update to version 1.123.80, 2.39.6, 2.40.1 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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