GHSA-HMR5-2XCR-V8PP Symfony Vulnerable to stored XSS in WebProfiler CodeExtension::fileExcerpt() — Unescaped Non-PHP File Rendering

Description Symfony's profiler, a development only debug UI, renders source-code excerpts on several pages using Twig's custom fileexcerpt filter. This filter renders PHP files via highlightstring which escapes HTML, but renders non-PHP files by splitting on \n and interpolating each line directl...