AIKIDO-2025-10091
@auth0/nextjs-auth0 is vulnerable to URL Redirection to Untrusted Site ('Open Redirect')
72
High Risk
This Affects:
@auth0/nextjs-auth0TL;DR
Affected versions of this package are vulnerable to an open redirect due to improper sanitization of the returnTo parameter in the handleLogin function. This allows an attacker to craft malicious URLs that redirect users to arbitrary domains. The issue is a regression introduced in version 4.
Who does this affect?
You are affected if you are using a version which is within vulnerability ranges
Background info
@auth0/nextjs-auth0 is vulnerable to URL Redirection to Untrusted Site ('Open Redirect') in versions 4.0.0 - 4.0.0.
How to fix this
Upgrade the @auth0/nextjs-auth0 library to the patch version.
Are You Affected?
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SOC 2Compliant
ISO 27001Compliant