dev.to· Oct 13, 2026· by anas_sheikh_2

Your Next.js Page Might Be Caching One User's Data and Serving It to Everyone Else

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This is the kind of bug that goes from "works perfectly in every test" to "actively leaking one...
🎯 Vulnerability: Web Security Vulnerability
💡 Defense Fix: Implement strict input validation, contextual output encoding, and enforce least-privilege authorization controls.
#nextjs#security#react#webdev