PhpWeasyPrint vulnerable to PHAR deserialization via output filename (CVE-2023-28115 case-insensitive bypass)

Summary pontedilana/php-weasyprint guarded the output filename against the phar:// stream wrapper with a case-sensitive blacklist: php if 0 === \strpos$filename, 'phar://' throw new \InvalidArgumentException'The output file cannot be a phar archive.'; PHP stream wrappers are case-insensitive, so...