CVE-2026-103251n8n before 1.123.80, 2.39.6, and 2.40.1 Package Install Validation Bypass via PubSub
Updated under an hour ago ()
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It affects n8n-io n8n. Add what you run to find out whether that includes you.
EPSS puts the chance of exploitation in the next 30 days at 0.20%, higher than 9% of scored CVEs.
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Free account, 1 product
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.
- CVSS
- 7.1 HIGH (v3.1, CNA)CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-862
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- 0.20% (percentile 9)
- Assigned by
- VulnCheck
- NVD analysis
- Deferred
- Record last updated
- Oct 1, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
n8n-io n8n n8n_io:n8n (from the name) | before 1.123.80; from 2.0.0 before 2.39.6; from 2.40.0 before 2.40.1 | CNA record |
References
- https://github.com/n8n-io/n8n/security/advisories/GHSA-fmmv-p585-7c8xvendor-advisory
- https://www.vulncheck.com/advisories/n8n-before-1.123.80-2.39.6-and-2.40.1-package-install-validation-bypass-via-pubsubthird-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.