1. Vulnerability Description

• Comparing unrelated variables using Contain can cause unintended behavior.

2. Vulnerability Countermeasure

• When using Contain, it is necessary to verify that the types are compatible type.

3. Sample Code

• Vunlerable Code

class Test {
    "abcdefgh".contains(2)
}

• Safe Code

class Test {
    "abcd".contains("abc")
}