CVE-2026-110841 Details
Description
n8n before 2.41.4 and 2.42.0 contains an authorization bypass in the agent chat resume endpoint, which accepts a run identifier from the request body without verifying that the suspended checkpoint belongs to the caller. Authenticated project members can list and read other members' private agent conversations through project-scoped endpoints, then approve their pending tool calls, causing the tools to execute and write results into the victim's conversation.
An authorization bypass vulnerability has been identified in n8n versions prior to 2.41.4 and 2.42.0. The issue resides in the agent chat resume endpoint, which processes run identifiers from the request body without verifying if the suspended checkpoint belongs to the caller. This flaw allows authenticated project members to access and read other members' private agent conversations through project-scoped endpoints. Additionally, they can approve pending tool calls on behalf of others, causing the tools to execute and deliver results into the victim's conversation.
Users are advised to upgrade to n8n versions 2.42.0 or 2.41.4. If an immediate upgrade is not possible, consider restricting access to the n8n instance to trusted users only, disabling the Agents module if not needed, limiting team project membership, and avoiding the use of tools requiring approval on shared agents until the instance is patched.
Metrics
CVSS 4.0 Severity and Vector Strings:
CVSS 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 20, 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 | < 2.41.4 (semver) < 2.42.0 (semver) |
CPE
Remediation
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Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Oct 20, 2026 | CVE Modified | CISA-ADP |
| Oct 14, 2026 | New CVE Received | [email protected] |
Volerion