AI agent vulnerability · n8n

CVE-2026-25631: n8n's domain allowlist bypass enables credential exfiltration

mediumCVSS 4.0 5.3GHSA-2xcx-75h9-vr9h

Impact A vulnerability in the HTTP Request node's credential domain validation allowed an authenticated attacker to send requests with credentials to unintended domains, potentially leading to credential exfiltration. This only might affect user who have credentials that use wildcard domain patterns (e.g., .example.com) in the "Allowed domains" setting. Patches This issue is fixed in version 1.121.0 and later.

Published Feb 4, 2026 · Updated Feb 19, 2026

Affected packages

n8n

Ecosystem: npm
Affected: < 1.121.0
Fixed in: 1.121.0
Check: npm ls n8n

Advisory details

From the GitHub Advisory Database (CC BY 4.0).

Impact

A vulnerability in the HTTP Request node's credential domain validation allowed an authenticated attacker to send requests with credentials to unintended domains, potentially leading to credential exfiltration.

This only might affect user who have credentials that use wildcard domain patterns (e.g., *.example.com) in the "Allowed domains" setting.

Patches

This issue is fixed in version 1.121.0 and later. All users are strongly encouraged to upgrade.

Workarounds

Until projects can upgrade:

Replace wildcard domain patterns with explicit domain listings in HTTP Request credentials
Review and restrict workflow creation/modification permissions to trusted users only
Audit existing workflows using HTTP Request nodes with domain-restricted credentials

--- n8n has adopted CVSS 4.0 as primary score for all security advisories. CVSS 3.1 vector strings are provided for backward compatibility.

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Credited to weblover12.

References

How this page is made: the data panel comes from the GitHub Advisory Database, CISA’s KEV catalog, the NVD and FIRST EPSS, and updates twice a day. No analysis has been written for this entry yet. Methodology

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