CVE-2026-77085: Server-Side Request Forgery (SSRF) in n8n-io n8n
Description
CVE-2026-77085 is a Server-Side Request Forgery (SSRF) vulnerability in n8n versions before 2.34.1 and 2.33.x before 2.33.4. The issue arises from the SearXNG Agent tool sending requests to user-supplied API URLs using a raw HTTP client that bypasses n8n's centralized SSRF protection. An authenticated user with permission to create SearXNG credentials and configure a personal agent can exploit this to make the n8n server connect to internal hosts and return their response content.
CVSS v4.0
Score 6.3medium
Affected software
n8n-io
n8n
n8n-io
n8n
pkg:github/n8n-io/n8nRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability in n8n affects versions >=2.0.0 <2.33.4 and >=2.34.0 <2.34.1. It involves the SearXNG Agent tool bypassing SSRF protections by using a raw HTTP client for requests to user-supplied API URLs. When SSRF protection is enabled (N8N_SSRF_PROTECTION_ENABLED=true), an authenticated user with specific permissions can set the API URL to an internal host. This causes the n8n server to connect to that internal host and return the response content through the Agent chat output, effectively bypassing SSRF protections.
Potential Impact
An authenticated user with permission to create SearXNG credentials and configure a personal agent can exploit this vulnerability to make the n8n server send requests to internal network hosts. This can lead to unauthorized internal resource access and data disclosure via the Agent chat output. The CVSS 4.0 score is 6.3 (medium severity), indicating a moderate risk due to the need for authentication and limited scope of impact.
Mitigation Recommendations
A fix is available in n8n versions 2.33.4 and 2.34.1 that addresses this SSRF protection bypass. Users should upgrade to these versions or later to remediate the vulnerability. No additional mitigation is indicated beyond applying the official fix.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-08-20T10:55:09.093Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6a86e708acd9273b498befda
Added to database: 08/20/2026, 11:37:44 UTC
Last enriched: 09/11/2026, 05:03:02 UTC
Last updated: 10/04/2026, 16:08:41 UTC
Views: 85
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