Auth bypass in N8n-Io N8n
CVE-2026-118642
n8n before 1.123.85, 2.43.5, and 2.44.1 contains an authorization bypass vulnerability that allows authenticated members to use inaccessible credentials through inline sub-workflow nodes with non-boolean disabled values. Attackers knowing a credential id can run Execute Workflow nodes in inline JSON mode that skip the permission check and send decrypted credentials to attacker-controlled servers.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/n8n-io/n8n/security/advisories/GHSA-8vrr-mgc5-jg55 (vendor-advisory)
- www.vulncheck.com/advisories/n8n-before-1.123.85-2.43.5-and-2.44.1-credential-p… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-118642?
- CVE-2026-118642 is a high-severity vulnerability in N8n-Io N8n, classified under Incorrect Authorization. CVSS score: 7.1/10. Published 2026-10-28.
- How severe is CVE-2026-118642?
- High severity. CVSS v3 base score is 7.1 out of 10.