CWE-180—Incorrect Behavior Order: Validate Before Canonicalize

Weakness Name

Incorrect Behavior Order: Validate Before Canonicalize

Description

The product validates input before it is canonicalized, which prevents the product from detecting data that becomes invalid after the canonicalization step.

This can be used by an attacker to bypass the validation and launch attacks that expose weaknesses that would otherwise be prevented, such as injection.

Common Consequences

Scope:

Access Control

Impact:

Bypass Protection Mechanism

Related Weaknesses

• CWE-179Incorrect Behavior Order: Early Validation