Log4j Problem in GanttProject?

Ist GanntProject von dieser Sicherheitslücke betroffen?
Wenn ja gfbt es einen Patch?

We do not speak German, sorry. The following is the translation of your message produced with Google Translate:

Is GanntProject affected by this vulnerability?
If so, is there a patch?

Please consider using English for better understanding.

Answering to the question, GanttProject does not use log4j library, and it is not used in the transitive dependencies either.