CVE-2026-8829 HTML::Entities versions before 3.84 for Perl read freed heap memory in _decode_entities

HTML::Entities versions before 3.84 for Perl read freed heap memory in decodeentities. The XS routine backing HTML::Entities::decodeentities cached a pointer repl into the entity-value SV returned by hvfetch on the entity2char hash. When the input SV was identical to a value SV in that hash, and...