The product validates input before it is canonicalized, which prevents the product from detecting data that becomes invalid after the canonicalization step.
Inputs should be decoded and canonicalized to the application's current internal representation before being validated (CWE-180). Make sure that the application does not decode the same input twice (CWE-174). Such errors could be used to bypass allowlist validation schemes by introducing dangerous inputs after they have been checked.
Our security experts can help you identify and remediate CWE-180 vulnerabilities in your codebase.
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