CVE-2023-48309
CVSS 3.1 Score 5.3 of 10 (medium)
Details
Summary
CVE-2023-48309 is a vulnerability affecting NextAuth.js, an authentication solution for Next.js applications. Versions prior to 4.24.5 are susceptible to this issue, which allows an attacker to create a mock user by intercepting and manipulating a JWT token issued during the OAuth sign-in process. This mock user doesn't have any associated user information, but an attacker can use it to simulate a logged-in state and potentially gain access to sensitive user information displayed on the dashboard or similar interfaces. The vulnerability does not allow access to other users' data or resources requiring proper authorization. The latest version of NextAuth.js, 4.24.5, includes a patch for the vulnerability. As a workaround, developers can implement a custom authorization callback for Middleware to avoid the risk.
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