Published onJuly 31, 2026Next.js July 2026 Security Release: Upgrade, Verify, and Reduce Server-Side RiskNext.jsSecurityApp-RouterServer-ActionsSSRFDependency-ManagementUpgrade Next.js 15.5 and 16.2 applications for the July 2026 security release, determine which advisories affect your architecture, and verify the patched deployment without reproducing exploits.