Vulnerability Details CVE-2025-67716
The Auth0 Next.js SDK is a library for implementing user authentication in Next.js applications. Versions 4.9.0 through 4.12.1 contain an input-validation flaw in the returnTo parameter, which could allow attackers to inject unintended OAuth query parameters into the Auth0 authorization request. Successful exploitation may result in tokens being issued with unintended parameters. This issue is fixed in version 4.13.0.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 19.3%
CVSS Severity
CVSS v3 Score 5.7
References
Products affected by CVE-2025-67716
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cpe:2.3:a:auth0:nextjs-auth0:4.10.0
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cpe:2.3:a:auth0:nextjs-auth0:4.11.0
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cpe:2.3:a:auth0:nextjs-auth0:4.11.1
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cpe:2.3:a:auth0:nextjs-auth0:4.11.2
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cpe:2.3:a:auth0:nextjs-auth0:4.12.0
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cpe:2.3:a:auth0:nextjs-auth0:4.9.0