This vulnerability category in the Seven Pernicious Kingdoms focuses on issues arising from inadequate input validation. Security risks from metacharacters, alternative encodings, and more are addressed.
One of the groups in the vulnerability classification known as the Seven Pernicious Kingdoms is dedicated to this particular category. It covers vulnerabilities that arise when an application fails to adequately validate or represent input. In accordance with the Seven Pernicious Kingdoms authors, this type of vulnerability stems from the presence of metacharacters, alternative encodings, and numerical representations. The security issues that arise from such vulnerabilities are a consequence of placing trust in input without proper verification.