CVE-2026-27971: Qwik vulnerable to Unauthenticated RCE via server$ Deserialization

Severity: Critical

CVSS Score: 9.2

Qwik is a performance focused javascript framework. qwik <=1.19.0 is vulnerable to RCE due to an unsafe deserialization vulnerability in the server$ RPC mechanism that allows any unauthenticated user to execute arbitrary code on the server with a single HTTP request. Affects any deployment where require() is available at runtime. This vulnerability is fixed in 1.19.1.