- CVE-2017-9233: fix external entity infinite loop in entityValueInitProcessor and entityValueProcessor - CVE-2023-52425: add reparse deferral heuristic to prevent O(n^2) parsing of large tokens in small buffer refills; fix buffer growth calculation - CVE-2013-0340: add billion laughs (entity expansion bomb) attack protection with amplification limit (100x max, 8 MiB activation threshold); includes fix for isolated external parser bypass (CVE-2024-28757) - CVE-2024-28757: add billion laughs (entity expansion bomb) attack protection with amplification limit (100x max, 8 MiB activation threshold); includes fix for isolated external parser bypass (CVE-2024-28757)