libexpat before 2.7.5 allows a NULL pointer dereference with empty external parameter entity content. (CVE-2026-32776) libexpat before 2.7.5 allows an infinite loop while parsing DTD content. (CVE-2026-32777) libexpat before 2.7.5 allows a NULL pointer dereference in the function setContext on retry after an earlier out-of-memory condition. (CVE-2026-32778)