CVE-2026-86074: CWE-918: Server-Side Request Forgery (SSRF) in n8n-io n8n
Description
A Server-Side Request Forgery (SSRF) vulnerability exists in the n8n workflow automation platform prior to versions 2.37.7 and 2.38.2. The issue occurs in the Instance AI credential setup flow, where a credential test or verification URL is accepted without verifying that it matches the workflow node's origin. This allows attacker-controlled content to influence the URL, potentially causing authenticated requests, redirects, or probes to unintended origins. The vulnerability affects specific code handling credential URLs and is fixed in versions 2.37.7 and 2.38.2.
CVSS v4.0
Score 5.9medium
Affected software
n8n-io
n8n
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-86074 is a Server-Side Request Forgery (SSRF) vulnerability in n8n-io's n8n platform. Before versions 2.37.7 and 2.38.2, the Instance AI credential setup flow accepted a credential test or verification URL without validating that it matched the origin of the workflow node. This flaw, located in packages/@n8n/instance-ai/src/tools/workflows/credential-utils.ts and the extractServiceOrigin function, could allow attacker-controlled content to manipulate the URL, causing authenticated requests or redirects to other origins. The vulnerability is addressed in versions 2.37.7 and 2.38.2.
Potential Impact
An attacker who can inject content into the Instance AI credential setup flow may cause the system to make authenticated requests, redirects, or probes to arbitrary origins. This could lead to unauthorized interactions with internal or external systems. However, exploitation requires user interaction and the vulnerability does not allow direct remote code execution or data exfiltration by itself. The CVSS 4.0 score is 5.9 (medium severity).
Mitigation Recommendations
This vulnerability is fixed in n8n versions 2.37.7 and 2.38.2. Users should upgrade to at least these versions to remediate the issue. No additional mitigation steps are indicated by the vendor advisory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-09-04T19:34:03.100Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6aa04b7bacd9273b49040483
Added to database: 09/08/2026, 17:52:59 UTC
Last enriched: 09/16/2026, 02:28:12 UTC
Last updated: 10/07/2026, 06:48:19 UTC
Views: 76
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