CVE-2026-45707: n8n-MCP is an MCP server that provides AI assistants access to n8n node documentation, properties, and operati

Q: How do I fix CVE-2026-45707?

n8n-mcp: upgrade to 2.51.2. Exact commands for each OS are on this page.

Q: Is CVE-2026-45707 being exploited?

CVE-2026-45707 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-45707 affect?

CVE-2026-45707 affects n8n-mcp. Severity is high (CVSS 8.1). n8n-MCP is an MCP server that provides AI assistants access to n8n node documentation, properties, and operations. Prior to 2.51.2, when ENABLE_MULTI_TENANT=true, the HTTP transport documents that the target n8n instance is selected per-req

Routine

HIGH 8.1UPGRADE

CVE-2026-45707 is a high-severity flaw (CVSS 8.1) affecting n8n-mcp. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

n8n-MCP is an MCP server that provides AI assistants access to n8n node documentation, properties, and operations. Prior to 2.51.2, when ENABLE_MULTI_TENANT=true, the HTTP transport documents that the target n8n instance is selected per-request from x-n8n-url / x-n8n-key headers. Requests that omitted those headers — or supplied only one of them — silently fell back to the process-level N8N_API_URL / N8N_API_KEY credentials configured for the ope

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	8.1 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.2% (top 86%)
CISA exploited list	No
Weakness	CWE-284
Published	2026-05-29
Last modified	2026-07-21

Publisher (CNA): GitHub, Inc. · Vendor: n8n-mcp

Last updated 2026-07-21 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-05-29 14:16 UTCPublished CVE record published
2026-07-21 12:10 UTCUpdated Record last modified

n8n-mcp n8n-mcp UPGRADE

Affected: < 2.51.2

Fixed in: 2.51.2

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy n8n-mcp || rpm -q n8n-mcp || n8n-mcp --version

2. UPGRADE to 2.51.2 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade n8n-mcp

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade n8n-mcp

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-45707?

n8n-mcp: upgrade to 2.51.2. Exact commands for each OS are on this page.

Is CVE-2026-45707 being exploited?

CVE-2026-45707 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-45707 affect?

CVE-2026-45707 affects n8n-mcp. Severity is high (CVSS 8.1). n8n-MCP is an MCP server that provides AI assistants access to n8n node documentation, properties, and operations. Prior to 2.51.2, when ENABLE_MULTI_TENANT=true, the HTTP transport documents that the target n8n instance is selected per-req

How urgent is CVE-2026-45707?

Priority 32/100. High severity

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CVE-2026-41495 MEDIUM 5.3 UPGRADE n8n-MCP is an MCP server that provides AI assistants access to n8n node documentation, properties, and operati
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References

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