libexpat through 2.5.0 allows recursive XML Entity Expansion if XML_DTD is undefined at compile time.
cwe.mitre.org/data/definitions/776.html
github.com/libexpat/libexpat/commit/0f075ec8ecb5e43f8fdca5182f8cca4703da0404
github.com/libexpat/libexpat/pull/777
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PNRIHC7DVVRAIWFRGV23Y6UZXFBXSQDB/
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WNUBSGZFEZOBHJFTAD42SAN4ATW2VEMV/
security.netapp.com/advisory/ntap-20240307-0005/