libexpat in Expat before 2.7.2 allows attackers to trigger large dynamic memory allocations via a small document that is submitted for parsing.Referenceshttps://github.com/libexpat/libexpat/issues/1018https://github.com/libexpat/libexpat/pull/1034https://github.com/libexpat/libexpat/blob/676a4c531ec768732fac215da9730b5f50fbd2bf/expat/Changes#L45-L74https://issues.oss-fuzz.com/issues/439133977https://github.com/libexpat/libexpat/blob/R_2_7_2/expat/Changes
