| Component | n8n |
| Severity | high (CVSS 7.1) |
| CVSS vector | CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H |
| Published (NVD) | 2026-10-01 |
| Affected versions | < 1.123.80 read from the advisory text: NVD has not published CPE data yet |
| Fixed in | 1.123.80 |
| Weakness | CWE-862 |
| CISA KEV | not listed |
NVD description
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.
What to do
- Upgrade n8n to
1.123.80or later. - Do not expose the component's API or UI to the internet without authentication in front of it.
Sources
- NVD: CVE-2026-103251
- https://github.com/n8n-io/n8n/security/advisories/GHSA-fmmv-p585-7c8x
- https://www.vulncheck.com/advisories/n8n-before-1.123.80-2.39.6-and-2.40.1-package-install-validation-bypass-via-pubsub
Read more
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