A request in Service Portal can be submitted with manually typed random wrongly formatted text in date fields on a catalog item form. There is no date/time validation done on the portal.
Steps to Reproduce
1 - On any catalog item, add a date type variable.
2 - Open the item on Service portal.
3 - Check that the date field is available on the catalog item form.
4 - Enter any random text in the date/time.
5 - Submit the form and observe the request is successfully submitted regardless of the invalid date/time format.
This problem is under review and targeted to be fixed in a future release. No workaround or back-porting patches are available for the current versions. You can Subscribe to this article to receive notifications when more information will become available.
Related Problem: PRB1329949