CWE-191
Integer Underflow (Wrap or Wraparound)
The product subtracts one value from another, such that the result is less than the minimum allowable integer value, which produces a value that is not equal to the correct result.
Impactr finds and proves whether CWE-191 — or flaws like it — are actually reachable in your own web apps and APIs, with a reproducible exploit as evidence.