Vulnerability in N8n
CVE-2026-65598
n8n before 1.123.64, 2.29.8, and 2.30.1 contains a TOCTOU race condition in the Git node's clone operation that allows authenticated users to bypass path restrictions by swapping a directory for a symlink after the path is validated but before the clone runs. This lets an attacker plant a crafted repository in the community node directory, which n8n loads as a custom node on the next restart, executing arbitrary JavaScript on the server. Both self-hosted and cloud instances are affected.
Vulnerability class: TOCTOU (Time-of-Check to Time-of-Use)
EPSS: 0.002 (15.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H.
Affected products
- N8n — versions 2.30.0
- N8n-io N8n — versions 0, 1.123.64, 2.30.1
Weakness classification (CWE)
References
- disclosure@vulncheck.com (vendor-advisory, Mitigation, Vendor Advisory)
- disclosure@vulncheck.com (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2026-65598?
- CVE-2026-65598 is a high-severity vulnerability in N8n, classified under Time-of-check Time-of-use (TOCTOU) Race Condition. CVSS score: 7.5/10. Published 2026-07-22.
- How severe is CVE-2026-65598?
- High severity. CVSS v3 base score is 7.5 out of 10.