1. Vulnerability Description

• Either’s Left, Right projection get can throw NoSuchElementException when the value doesn’t exist. In particular, get has been deprecate from Scala 2.13.0.

2. Vulnerability Countermeasure

• Use getOrElse to handle when the value doesn’t exist.

3. Sample Code

• Vulnerable Code

class Test {
  val l = Left("l")
  l.left.get
  val r = Right("r")
  r.right.get
}