CVE-2026-72771
Received Received - Intake

n8n AI/LLM Nodes Bypass Allowed Domains Allowlist

Publication date: 2026-08-11

Last updated on: 2026-08-11

Assigner: VulnCheck

Description
n8n versions before 2.32.1 fail to enforce the Allowed HTTP Request Domains allowlist in multiple AI and LLM nodes when user-supplied base or endpoint URLs are configured. Low-privileged workflow editors with use-only access to shared credentials can redirect requests to attacker-controlled hosts and exfiltrate credential secrets for reuse against underlying services.

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Meta Information

Published
2026-08-11
Last Modified
2026-08-11
Generated
2026-08-11
AI Q&A
2026-08-11
EPSS Evaluated
N/A
NVD
CVE-2026-72771
EUVD
EUVD-2026-56097

Affected Vendors & Products

Showing 3 associated CPEs
Vendor Product Version / Range
n8n n8n to 2.32.1 (exc)
n8n-io n8n to 2.32.1 (exc)
n8n-io n8n to 2.31.5 (exc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-863 The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.

Attack-Flow Graph

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Executive Summary

n8n versions before 2.32.1 fail to enforce the Allowed HTTP Request Domains allowlist in AI and LLM nodes. Low-privileged users with shared credentials can redirect requests to attacker-controlled hosts and steal credential secrets for reuse against other services.

Detection Guidance

Check n8n version with 'n8n --version' to confirm if it is below 2.32.1 or 2.31.5. Review workflows using AI/LLM nodes for suspicious base or endpoint URLs. Inspect shared credentials with domain restrictions for unauthorized access patterns.

Impact Analysis

Attackers could exploit this to steal shared credential secrets, leading to unauthorized access to underlying services. The impact includes data exfiltration and potential compromise of connected systems.

Compliance Impact

This vulnerability could lead to unauthorized data access or exfiltration, violating GDPR and HIPAA requirements for data protection and access controls. Compliance risks include data breaches and unauthorized credential usage.

Mitigation Strategies

Upgrade n8n to version 2.32.1 or later. Restrict workflow editing permissions to trusted users. Audit and limit credential sharing, especially those with domain restrictions. Remove or disable shared credentials not in active use.

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