CVE-2026-54052
Last modified
CVE-2026-54052 is a critical-severity vulnerability rated 9.9/10 on the CVSS scale. 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. EPSS estimates a 0.39% chance of exploitation in the next 30 days.
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.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| N8n-Mcp | N8n-Mcp | < 2.56.1 |
References
- https://github.com/czlonkowski/n8n-mcp/security/advisories/GHSA-j6r7-6fhx-77wxMitigation, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-54052?
How severe is CVE-2026-54052?
How do I fix CVE-2026-54052?
How Strix Helps
- Uncovering a hidden BOLA in Appsmith's snapshot logicStrix autonomously discovered a BOLA/IDOR vulnerability in Appsmith's snapshot deletion path.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-54040LibreChat is an enhanced ChatGPT clone that supports multipl…7.1
- CVE-2026-54047Laci Synchroni is a decentralized mod and appearance sync se…9.2
- CVE-2026-54048Specifying tblproperties('avro.schema.url'=' http://...' ) o…5.3
- CVE-2026-5405RDP protocol dissector crash in Wireshark 4.6.0 to 4.6.4 and…7.8
- CVE-2026-54050Sakai is a Collaboration and Learning Environment (CLE). Fro…6.5
- CVE-2026-54051Network-AI is a TypeScript/Node.js multi-agent orchestrator.…9.9
- CVE-2026-54053Many Notes is a Markdown note-taking web application designe…9.6
- CVE-2026-54054Transmute is a free, open-source, self-hosted file conversio…6.5
- CVE-2026-54055Kitty is a cross-platform GPU based terminal. In versions pr…5
- CVE-2026-54056Kitty is a cross-platform GPU based terminal. In versions 0.…7.1
- CVE-2026-54057Kitty is a cross-platform GPU based terminal. In versions pr…7.8
- CVE-2026-54058Pillow is a Python imaging library. Prior to 12.3.0, when Pi…9.1
Are you affected by CVE-2026-54052?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST