CWE-142 (值分隔符转义处理不恰当) — Vulnerability Class 2

CWE-142 represents a critical input validation weakness where software fails to properly sanitize special characters that serve as value delimiters, such as commas, pipes, or semicolons, before passing data to downstream components. This flaw typically enables attackers to inject malicious payloads by manipulating these delimiters, thereby tricking the parser into misinterpreting the structure of the input. Consequently, the application may execute unintended commands, process unauthorized data, or trigger logic errors that compromise system integrity. To mitigate this risk, developers must rigorously validate and escape all incoming data, ensuring that delimiter characters are either strictly prohibited or safely neutralized before processing. Implementing robust parsing libraries that explicitly define expected formats and rejecting any input containing unexpected structural elements are essential practices for preventing delimiter-based injection attacks and maintaining secure data flow between system components.