CWE-230 (缺失值处理不恰当) — Vulnerability Class 9

CWE-230 represents a logic error where software fails to properly manage parameters, fields, or arguments that are explicitly specified but lack associated values, resulting in empty, blank, or null inputs. This weakness is typically exploited by attackers who manipulate request structures to send malformed data, triggering unexpected application states, crashes, or denial-of-service conditions. In some cases, missing values can bypass security checks or cause unintended data exposure if the system defaults to insecure behaviors. To mitigate this risk, developers must implement robust input validation that explicitly checks for null or empty conditions before processing. By enforcing strict type checking and establishing clear default behaviors or error handling routines for absent data, engineers can ensure the application remains stable and secure, preventing attackers from leveraging these gaps to disrupt service or compromise system integrity.