A critical flaw in the Next.js React framework could be exploited to bypass authorization checks under certain conditions.The Next.js React framework has addressed the vulnerability in versions 12.3.5, 13.5.9, 14.2.25, and 15.2.3.Authorization checks in Next.js middleware can be bypassed, potentially allowing unauthorized access.Next.js users are advised to update their framework or use a workaround to protect their applications.