CWE-140 (分隔符转义处理不恰当) — Vulnerability Class 17

CWE-140 represents a critical input validation weakness where software fails to properly neutralize delimiters, such as quotes, semicolons, or brackets, within user-supplied data. This flaw typically enables attackers to inject malicious syntax into commands, queries, or configuration files, thereby altering the intended execution flow. For instance, an attacker might use a quote character to break out of a string context, allowing for SQL injection or command injection attacks that compromise data integrity or system control. To mitigate this risk, developers must implement strict input validation and encoding strategies. By consistently escaping or quoting special characters based on the specific context of the destination parser, programmers ensure that delimiters are treated as literal data rather than executable instructions, effectively neutralizing the threat before it can be exploited.