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Infinite loop in XlsIO with an empty xl/xmlMaps.xml file

When trying to open an Excel workbook, the operation will cause an infinite loop if the xlsx file (which is essentially a zip file) contains an empty MapInfo tag in the xl/xmlMaps.xml file inside. Please see the attached file for an example.

After removing the xl/xmlMaps.xml file from the xlsx, the workbook opens correctly.

I'm sorry, I can't share the xlsx file which caused this issue in the first place, but you should be able to add the xl/xmsMaps.xml file to an existing xlsx file that does not already have one in order to reproduce the issue.


Reproduced with Syncfusion.XlsIO.Net.Core 27.2.4 and 28.1.33.