Loop with Unreachable Exit Condition ('Infinite Loop')
The "Math/PrimeField.php" file in phpseclib/phpseclib 3.0.x prior to 3.0.19 has an Infinite Loop with composite primefields.
CWE-835 - Loop with Unreachable Exit Condition
Loops with multiple exits and flags detract from the quality of an application. They tend to make control structures difficult to understand, and introduce the risk of non-termination and other structural problems. The vulnerability “loop with unreachable exit condition” enables attackers to exploit this flaw, leading to denial of service.