JFreeChart v1.5.4 was discovered to contain a NullPointerException via the component /chart/annotations/CategoryLineAnnotation. NOTE: this is disputed by multiple third parties who believe there was not reasonable evidence to determine the existence of a vulnerability. The submission may have been based on a tool that is not sufficiently robust for vulnerability identification.
https://github.com/jfree/jfreechart
https://gist.github.com/LLM4IG/35c46e009b205ef6acd0e290e80fb876