NPM: Quasar Framework: Super-linear regex backtracking on User-Agent lets one request stall a Quasar SSR server

NPM: Quasar Framework: Super-linear regex backtracking on User-Agent lets one request stall a Quasar SSR server vulnerability discovered by ? in WordPress Npm quasar versions = 2.23.2...

Quasar Framework: Super-linear regex backtracking on User-Agent lets one request stall a Quasar SSR server

Summary One unauthenticated request with a crafted User-Agent stalls a Quasar SSR server for seconds. Quasar auto-installs its Platform plugin on every server-side render, and Platform.parseSSR feeds the raw, unbounded User-Agent request header into a chain of backtracking regular expressions in...

CVE-2026-106104 Quasar Framework: Super-linear regex backtracking on User-Agent lets one request stall a Quasar SSR server

Quasar Framework is a framework for building high-performance Vue.js user interfaces. Prior to 2.23.3, Platform.parseSSR passed an unbounded User-Agent request header to getMatch in ui/src/plugins/platform/Platform.js, whose browser-detection expressions combined greedy captures with repeated...