What’s Vulnerable › Vulnerabilities

CVE-2026-110853: n8n before 1.123.83 Authorization Bypass via Execute Sub-workflow Inline JSON

• Severity: high (CVSS 7.1 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-14 · updated 2026-10-16
• Weakness: CWE-639

Description

n8n before 1.123.83 contains an authorization bypass vulnerability that allows authenticated members to spoof workflow identity by supplying a trusted identifier in Execute Sub-workflow inline JSON mode. Attackers can set this identifier to resolve credentials from projects they do not belong to and modify another workflow's static data and error-workflow dispatch.

Affected products

• n8n-io n8n: before 1.123.83 — fixed in 1.123.83

How to fix

Upgrade to a fixed version: n8n-io n8n 1.123.83. Check the vendor advisory for mitigations.

References

• https://github.com/n8n-io/n8n/security/advisories/GHSA-866p-xg8v-g2q7
• https://www.vulncheck.com/advisories/n8n-before-1.123.83-authorization-bypass-via-execute-sub-workflow-inline-json

Get alerted when CVE-2026-110853 or the next vulnerability affects your stack