HighVulnerability

CVE-2026-59207: n8n AI Agents MCP tool ignores credential HTTP domain restriction

Source: NVD(opens in a new tab)
Identifier: CVE-2026-59207
Published: July 9, 2026
Record updated: October 9, 2026

Affected: n8n >= 2.28.0, < 2.28.1, fixed in 2.28.1
n8n < 2.27.4, fixed in 2.27.4
Known exploitation: Not listed in the CISA Known Exploited Vulnerabilities catalog at the last check.
EPSS: 0.4%

Summary

CVE-2026-59207 is a vulnerability in n8n, an open source workflow automation platform, affecting versions before 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. A member-level user with use-only access to a shared credential could send its secret to an external server they control.

Mitigation

This issue is fixed in versions 2.27.4 and 2.28.1.

Details

Scores and exploitation

Patch available: Yes
EPSS: 0.4%Estimated probability that this CVE is exploited in the next 30 days, from the FIRST Exploit Prediction Scoring System. Read on October 15, 2026.
Disclosure date: July 9, 2026

Weaknesses and techniques

Weakness (CWE): CWE-693

Affected

Packages: n8n@>= 2.28.0, < 2.28.1 (fixed: 2.28.1)
n8n@< 2.27.4 (fixed: 2.27.4)

Classification

Attack type: Other
Attack sophistication: Trivial
AI component targeted: Agent
Impact: Confidentiality
Labels: security

How this record was produced

Summaries, mitigations and labels on this page are generated automatically from the source. The linked source is authoritative. The source gives this advisory a description and no title, so the title above is a headline generated from the source text.

Original source: https://nvd.nist.gov/vuln/detail/CVE-2026-59207

First tracked: July 9, 2026 at 02:07 PM ET, from NVD/CVE Database

Classifier: claude-haiku-5-5, prompt v4

Classifier confidence: 90% (self-assessed)

Affected packages in the Exposure Registry

Matched by package name and ecosystem. Each entry shows whether the package delegates to a language model and how many tracked packages depend on it.

n8nnpmLLM dependency since 2026-04-29

Summary

Mitigation

Affected packages in the Exposure Registry

Topics

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