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CVE-2026-44694

33
FAUCET Score

n8n-MCP is an MCP server that provides AI assistants access to n8n node documentation, properties, and operations. From version 2.18.7 to before version 2.50.2, there is an authenticated server-side request forgery vulnerability affecting the webhook trigger tools, the n8n API client (N8N_API_URL), and per-request URLs supplied via the x-n8n-url header in multi-tenant HTTP mode. This issue has been patched in version 2.50.2.

First published: May 8, 2026Last modified: May 12, 2026

Impacted Technologies

VendorProductVersion(s)CPE
>= 2.18.7, < 2.50.2CPE matchmatch criteria
cpe:2.3:a:n8n-mcp:n8n-mcp:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 4.0

7.2HIGH

CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:L/VA:L/SC:H/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack Vector
NETWORK
Attack Complexity
HIGH
Attack Requirements
PRESENT
Privileges Required
LOW
User Interaction
NONE
VS Confidentiality
HIGH
VS Integrity
LOW
VS Availability
LOW
SS Confidentiality
HIGH
SS Integrity
LOW
SS Availability
LOW
Exploit Maturity
NOT_DEFINED
CvssVersion
4.0

Exploit Intelligence

EPSS Score
0.24%
Probability of exploitation in next 30 days
EPSS Percentile
14.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0024 is in the 3rd percentile among its peer group of 1,128 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 1.0 Bluesky, 0.5 Mastodon, and 1.6 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

github_advisorypatch availablevia nvd_reference
View patch
npmpatch availablevia ghsa
Product: n8n-mcpFixed in: 2.50.2

Vendor Advisories (1)

npmGHSA-cmrh-wvq6-wm9rhigh

n8n-mcp webhook and API client paths has an authenticated SSRF

May 8, 2026

References

github.com / czlonkowski/n8n-mcp/commit/bcaba839409d470abeb4a6ad9b361b553a1098eb
Patch
github.com / czlonkowski/n8n-mcp/releases/tag/v2.50.2
ProductRelease Notes
github.com / czlonkowski/n8n-mcp/security/advisories/GHSA-cmrh-wvq6-wm9r
MitigationVendor Advisory