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CVE-2026-59207

n8n: "Allowed HTTP Request Domains" Restriction Bypass via AI Agents MCP Connector

MEDIUM
6.5
CVSS Score
Published: July 9, 2026 at 03:16 PM UTC
Updated: October 25, 2026 at 05:10 PM UTC
2 products affected across 2 vendorsN8NN8N

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Severity
MEDIUM6.5
Exploit prediction
EPSS 0.4%
SSVC
No known exploit

Description

n8n is an open source workflow automation platform. Prior to 2.27.4 and 2.28.1, the AI Agents feature did not enforce the Allowed HTTP Request Domains restriction configured on credentials when an MCP tool was pointed at an arbitrary URL, allowing a member-level user with use-only access to a shared credential to send its secret to an external server they control. This issue is fixed in versions 2.27.4 and 2.28.1.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

N8N· N8Nnpm
95%
v < 2.27.42.28.0
Affected range stops below 2.27.4, so it looks safe — our inference, not a vendor statement
N8N· N8N Io
90%
v < 2.27.4
Affected range stops below 2.27.4, so it looks safe — our inference, not a vendor statement
Affected range stops below 2.28.1, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (3)

x_refsource_CONFIRMVendor Advisory
Source: cverecord
https://github.com/n8n-io/n8n/security/advisories/GHSA-h44j-f5r5-ph73
x_refsource_MISCRelease Notes
Source: cverecord
https://github.com/n8n-io/n8n/releases/tag/n8n%402.27.4
x_refsource_MISCRelease Notes
Source: cverecord
https://github.com/n8n-io/n8n/releases/tag/n8n%402.28.1

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.5MEDIUM[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-693NVD-CWE-noinfo

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