GHSA-5G9F-CWWG-4P8G PhpWeasyPrint vulnerable to arbitrary file deletion at shutdown via public $temporaryFiles

Summary AbstractGenerator::$temporaryFiles is a public array, and removeTemporaryFiles — invoked from destruct and from a registered shutdown function — calls unlink on every entry without verifying that the path is contained within the temporary folder. Any code holding a reference to a generato...