chart macro causing Confluence to crash with high cpu usage

Steps to reproduce :

1. Login to Confluence
2. Create a new page
3. Add Chart Macro and create a table and insert data with configuration like the screenshot below :
   
   Please note that the third row which have 2 dates specified for start and end is causing Confluence to crash.
4. Save it and Confluence will crash after a while with the following error in the logs :

    -- referer: http://localhost:8900/display/SWPIT/Vacations+and+Absences | url: /display/SWPIT/Vacations+and+Absences | userName: admin | action: viewpage | page: 3473420
   java.lang.OutOfMemoryError: GC overhead limit exceeded

Expected behavior : It should timeout the page or prevent invalid data to be entered instead of crashing Confluence.

Current behavior : It crashes Confluence after a period of high cpu and memory usage.