In-Depth Analysis of CVE-2026-15043: Inverted SQL Operators in DBI::SQL::Nano
This educational analysis delves into CVE-2026-15043, a critical vulnerability in DBI::SQL::Nano, a mini-SQL engine for Perl. The vulnerability causes inverted <= and >= SQL operators on text, potentially leading to unauthorized data exposure. We will explore the root cause, attack surface, exploitation mechanics, real-world impact, and defensive strategies.