CVE-2026-3665 xlnt-community xlnt XLSX File xlsx_consumer.cpp read_office_document null pointer dereference

A vulnerability was identified in xlnt-community xlnt up to 1.6.1. The affected element is the function xlnt::detail::xlsxconsumer::readofficedocument of the file source/detail/serialization/xlsxconsumer.cpp of the component XLSX File Parser. The manipulation leads to null pointer dereference. Th...