CVE-2026-3664: Out-of-bounds Read

A vulnerability was determined in xlnt-community xlnt up to 1.6.1. Impacted is the function xlnt::detail::compounddocument::readdirectory of the file source/detail/cryptography/compounddocument.cpp of the component Encrypted XLSX File Parser. Executing a manipulation can lead to out-of-bounds rea...