Apache Commons Configuration

Apache Commons Configuration uses a third-party library to parse YAML files which by default allows the instantiation of classes if the YAML includes special statements. Apache Commons Configuration versions 2.2, 2.3, 2.4, 2.5, 2.6 did not change the default settings of this library. So if a YAML file was loaded from an untrusted source, it could therefore load and execute code out of the control of the host application.

Apache Commons Configuration insecure interpolation defaults

Apache Commons Configuration: StackOverflowError adding property in AbstractListDelimiterHandler.flattenIterator()

Apache Commons Configuration: Uncontrolled Resource Consumption when loading untrusted configurations in 1.x

Apache Commons Configuration: StackOverflowError calling ListDelimiterHandler.flatten(Object, int) with a cyclical object tree

Apache Commons Configuration: StackOverflowError for YAML input with cycles