CVE-2026-103251
n8n before 1.123.80, 2.39.6, and 2.40.1 Package Install Validation Bypass via PubSub
CVSS Score
7.1
EPSS Score
0.0%
EPSS Percentile
0th
n8n versions before 1.123.80, from 2.0.0 before 2.39.6, and from 2.40.0 before 2.40.1 contain a validation bypass vulnerability in the community package installation handler for queue mode deployments. Attackers with Redis write access can bypass name validation, permission checks, checksum verification, and npm safety checks to install arbitrary npm packages across all cluster instances without authentication.
| CWE | CWE-862 |
| Vendor | n8n-io |
| Product | n8n |
| Published | Oct 1, 2026 |
Stay Ahead of the Next One
Get instant alerts for n8n-io n8n
Be the first to know when new high vulnerabilities affecting n8n-io n8n are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
CVSS v3 Breakdown
CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H Attack Vector
Adjacent
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
n8n-io / n8n
0 < 1.123.80 2.0.0 < 2.39.6 2.40.0 < 2.40.1
References
Credits
🔍 AyushParkara