BIT-PHP-2026-91765 SOAP: Unbounded Recursion in Server-Side cleanup_xml_node

cleanupxmlnode in the SOAP XML parser recurses once per XML nesting level with no depth limit. An unauthenticated attacker can post a SOAP request containing tens of thousands of nested elements to any SoapServer endpoint, exhaust the stack and crash the process. The same unbounded recursion exis...