CVE-2026-54052
9.9 · CRITICALOverview
CVE-2026-54052 is a critical-severity vulnerability affecting n8n-mcp n8n-mcp. It was published on July 15, 2026 and has a CVSS 3.1 base score of 9.9 (CRITICAL).
This vulnerability has a CVSS 3.1 base score of 9.9, rated CRITICAL. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
Technical Description
n8n-MCP is an MCP server that provides AI assistants access to n8n node documentation, properties, and operations. Prior to 2.56.1, in HTTP mode with multi-tenancy enabled through ENABLE_MULTI_TENANT=true, n8n-mcp's local workflow version history backups were not isolated per tenant, allowing an authenticated tenant to read workflow version snapshots belonging to other tenants and delete or destroy other tenants' stored backups, including full node definitions, credential references, and authorization headers. This issue is fixed in version 2.56.1.
Remediation
Check the references section for vendor advisories and patches from n8n-mcp. Update n8n-mcp to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| n8n-mcp | n8n-mcp | >= 0, < 2.56.1 | Affected |
Frequently Asked Questions
What is CVE-2026-54052?
CVE-2026-54052 is a critical-severity vulnerability affecting n8n-mcp n8n-mcp. It was published on July 15, 2026 and has a CVSS 3.1 base score of 9.9 (CRITICAL).
How severe is CVE-2026-54052?
This vulnerability has a CVSS 3.1 base score of 9.9, rated CRITICAL. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2026-54052?
Check the references section for vendor advisories and patches from n8n-mcp. Update n8n-mcp to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2026-54052?
CyberStrike's AI-powered security agents can automatically detect CVE-2026-54052 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
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