Common Weakness Enumeration

    CWE Definition / CWE-179

    CWE-179: Incorrect Behavior Order: Early Validation

    The product validates input before applying protection mechanisms that modify the input, which could allow an attacker to bypass the validation via dangerous inputs that only arise after the modification.

    Published:19 Jul 2006
    Organization:MITRE
    Modified:11 Dec 2025

    Related Weakness

    CWE-20: Improper Input Validation

    CWE-696: Incorrect Behavior Order