AI agent vulnerability · n8n

CVE-2025-49592: n8n allows open redirects via the /signin endpoint

mediumCVSS 3.1 4.6GHSA-5vj6-wjr7-5v9f

Impact This is an Open Redirect (CWE-601) vulnerability in the login flow of n8n. Authenticated users can be redirected to untrusted, attacker-controlled domains after logging in, by crafting malicious URLs with a misleading redirect query parameter.

Published Jun 27, 2025

Affected packages

n8n

Ecosystem: npm
Affected: <= 1.97.0
Fixed in: 1.98.0
Check: npm ls n8n

Advisory details

From the GitHub Advisory Database (CC BY 4.0).

Impact

This is an Open Redirect (CWE-601) vulnerability in the login flow of n8n. Authenticated users can be redirected to untrusted, attacker-controlled domains after logging in, by crafting malicious URLs with a misleading redirect query parameter.

This may lead to:

Phishing attacks by impersonating the n8n UI on lookalike domains (e.g., n8n.local.evil.com)
Credential or 2FA theft if users are tricked into re-entering sensitive information
Reputation risk due to the visual similarity between attacker-controlled domains and trusted ones

The vulnerability affects anyone hosting n8n and exposing the /signin endpoint to users.

Patches

The issue has been patched in 1.98.0. All users should upgrade to this version or later.

The fix introduces strict origin validation for redirect URLs, ensuring only same-origin or relative paths are allowed after login.

Patch commit: https://github.com/n8n-io/n8n/pull/16034

Credited to tatianahub.

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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