CVE-2026-59207: CWE-693: Protection Mechanism Failure in n8n-io n8n
n8n is an open source workflow automation platform. Prior to 2.27.4 and 2.28.1, the AI Agents feature did not enforce the Allowed HTTP Request Domains restriction configured on credentials when an MCP tool was pointed at an arbitrary URL, allowing a member-level user with use-only access to a shared credential to send its secret to an external server they control. This issue is fixed in versions 2.27.4 and 2.28.1.
AI Analysis
Technical Summary
The vulnerability in n8n's AI Agents feature involves a failure to enforce the Allowed HTTP Request Domains restriction on credentials when an MCP tool is directed at an arbitrary URL. This allows a user with limited access to a shared credential to exfiltrate the credential secret to an external server. The problem affects versions prior to 2.27.4 and 2.28.1 and is addressed by updates in these versions.
Potential Impact
An attacker with member-level use-only access to a shared credential can exploit this vulnerability to send the credential secret to an external server under their control, potentially leading to unauthorized disclosure of sensitive credential information.
Mitigation Recommendations
This vulnerability is fixed in n8n versions 2.27.4 and 2.28.1. Users should upgrade to at least version 2.27.4 or 2.28.1 to remediate the issue. Patch status is confirmed by the version fix information. No additional mitigations are specified.
CVE-2026-59207: CWE-693: Protection Mechanism Failure in n8n-io n8n
Description
n8n is an open source workflow automation platform. Prior to 2.27.4 and 2.28.1, the AI Agents feature did not enforce the Allowed HTTP Request Domains restriction configured on credentials when an MCP tool was pointed at an arbitrary URL, allowing a member-level user with use-only access to a shared credential to send its secret to an external server they control. This issue is fixed in versions 2.27.4 and 2.28.1.
CVSS v4.0
Score 7.1high
Affected software
pkg:github/n8n-io/n8nRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability in n8n's AI Agents feature involves a failure to enforce the Allowed HTTP Request Domains restriction on credentials when an MCP tool is directed at an arbitrary URL. This allows a user with limited access to a shared credential to exfiltrate the credential secret to an external server. The problem affects versions prior to 2.27.4 and 2.28.1 and is addressed by updates in these versions.
Potential Impact
An attacker with member-level use-only access to a shared credential can exploit this vulnerability to send the credential secret to an external server under their control, potentially leading to unauthorized disclosure of sensitive credential information.
Mitigation Recommendations
This vulnerability is fixed in n8n versions 2.27.4 and 2.28.1. Users should upgrade to at least version 2.27.4 or 2.28.1 to remediate the issue. Patch status is confirmed by the version fix information. No additional mitigations are specified.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-07-02T21:05:02.924Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a4fbf4868715ace439fdda2
Added to database: 07/09/2026, 15:33:28 UTC
Last enriched: 07/09/2026, 15:47:33 UTC
Last updated: 07/09/2026, 16:33:17 UTC
Views: 6
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