CVE-2026-110853 Details
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.
A vulnerability allowing authorization bypass has been identified in n8n versions prior to 1.123.83. This vulnerability enables authenticated users to spoof workflow identities by inserting a trusted identifier in the Execute Sub-workflow inline JSON mode. Exploiting this flaw allows users to access credentials from projects they are not part of, and to alter static data and error-workflow dispatch for other workflows.
Users are advised to upgrade to n8n version 1.123.83 or later. If an immediate upgrade is not possible, access to the n8n instance should be restricted to trusted users only, membership should be audited and limited to those who need it, and execution logs should be monitored for unexpected sub-workflow executions from lower-privileged members.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Oct 14, 2026CISA-ADP
Assessed Oct 16, 2026References to Advisories, Solutions, and Tools
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Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-639 | Authorization Bypass Through User-Controlled Key | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| n8n | < 1.123.83 (semver) |
CPE
Remediation
| |
Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Oct 16, 2026 | CVE Modified | CISA-ADP |
| Oct 14, 2026 | New CVE Received | [email protected] |