CVE-2025-67716Medium· 5.7▾ SunlitThe 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 O…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 31.4 · likelihood 0.1 · exploitation 0
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Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
Last analysed / modified upstream
0.3%
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.
nextjs-auth0 >= 4.9.0, < 4.12.1Upgrade past the affected range:
nextjs-auth0 4.12.1Connected by shared product, vendor, weakness, or advisory.
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