SEPTEMBER 9, 2026
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Case File

CVE-2026-55608

MEDIUM · CVSS 4.2 EPSS 0.16% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-07-15 · Last synced 2026-08-14

CyberRota Analysis

AI-Generated

The vulnerability affects n8n-MCP servers configured in multi-tenant HTTP mode with ENABLE_MULTI_TENANT=true, allowing authenticated tenants to access and potentially manipulate workflow version backups outside their designated scope. This could lead to unauthorized exposure or deletion of sensitive backup data from previous single-tenant deployments. Organizations using n8n-MCP prior to version 2.57.4 should prioritize updating to mitigate the risk of data leakage and integrity issues.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-55608
Severity
MEDIUM
CVSS
4.2
EPSS
0.16%

Original NVD Description

n8n-MCP is an MCP server that provides AI assistants access to n8n node documentation, properties, and operations. Prior to 2.57.4, multi-tenant HTTP mode with ENABLE_MULTI_TENANT=true could allow an authenticated tenant to access default-scope workflow_versions backups instead of being confined to the tenant scope, exposing or deleting workflow-version backups from prior single-tenant deployments or migrations. This issue is fixed in version 2.57.4.

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