In Fat-Free Framework 3.7.1, attackers can achieve arbitrary code execution if developers choose to pass user controlled input (e.g., $_REQUEST, $_GET, or $_POST) to the framework's Clear method.
CVSS 3.1CRITICAL 9.8·Network·No auth·No interaction·EPSS 0.02137·Published 2020-03-11·Fixed in 3.7.2CWE-20
