CVE-2025-49592: n8n allows open redirects via the /signin endpoint
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.
References
- github.com/advisories/GHSA-5vj6-wjr7-5v9f
- github.com/n8n-io/n8n
- github.com/n8n-io/n8n/commit/4865d1e360a0fe7b045e295b5e1a29daad12314e
- github.com/n8n-io/n8n/pull/16034
- github.com/n8n-io/n8n/releases/tag/n8n%401.98.0
- github.com/n8n-io/n8n/security/advisories/GHSA-5vj6-wjr7-5v9f
- nvd.nist.gov/vuln/detail/CVE-2025-49592
Code Behaviors & Features
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