CVE-2026-3257 affects UnQLite versions through 0.06 for Perl, which uses a potentially insecure version of the UnQLite library from 2014. The Perl module embeds the UnQLite library and versions 0.06 and earlier may be vulnerable to a heap-based overflow. This vulnerability is related to the use of an outdated underlying library component that contains security flaws. Organizations using UnQLite for Perl should update to version 0.07 or later to address this issue.