Security

A technical breakdown of CVE-2026-27971, a CVSS 9.2 critical unauthenticated remote code execution vulnerability in Qwik (< 1.19.1). Unsafe deserialization in the server$ RPC flow allows attacker-controlled QRL objects to be reconstructed from application/qwik-json requests, enabling arbitrary module path and symbol resolution and, where require() is available,remote code execution via crafted server-side function invocation.