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Clerk changelog digest

Mar 16 - Mar 22, 2026. Useful releases, risky migrations, and noisy updates from the Clerk channel.

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Clerk updates in 2026-w12

Backported bug fixes for core and Turbopack, including adapter output handling, server actions in standalone mode, and layout segment optimization.

Added many experimental and performance features such as strict route type checking, new routing package, CPU profiling flag, custom cache handlers, LRU cache with invocation IDs, gesturePush, and Claude Code plugin marketplace; expanded...

Fixed multiple security vulnerabilities (CVE‑2026‑27977‑27980, CVE‑2026‑29057) and prevented request smuggling and unsafe websocket connections.