CVE-2023-23924

CVE-2023-23924 is a critical vulnerability affecting Dompdf (versions 2.0.1 and earlier), an HTML to PDF converter. It allows for a URI validation bypass during SVG parsing, specifically when using uppercase letters in <image> tags. This flaw can lead to arbitrary object unserialization via the phar URL wrapper in PHP versions prior to 8.0.0, potentially resulting in arbitrary file deletion or remote code execution. With a CVSS score of 9.8 (Critical), the vulnerability is easily exploitable over the network with low attack complexity and no user interaction required, posing a high risk to confidentiality, integrity, and availability. While no active exploitation, public exploit code, or significant community discussion has been observed, the high EPSS and FAUCET Risk Score indicate its potential for future exploitation.