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CWE-758

Reliance on Undefined, Unspecified, or Implementation-Defined Behavior

The product uses an API function, data structure, or other entity in a way that relies on properties that are not always guaranteed to hold for that entity.

Official CWE-758 definition at MITRE

Impactr finds and proves weaknesses like CWE-758 in your web apps and APIs - investigating, chaining, and validating each with a reproducible exploit.

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