Out-of-Bounds Write

Apache Commons Configuration is vulnerable to Out-of-Bounds Write. The vulnerability is due to improper handling of a cyclical object tree, which can trigger a StackOverflowError when the ListDelimiterHandler.flatten() method is called. This occurs because the method recursively traverses the object tree without a proper termination condition, leading to excessive recursion and eventually a stack overflow, resulting in Denial of Service (DoS).