September 6, 2021

Any regular expression added within the validation property of your content type should be valid. This update will restrict you from saving your content type if an invalid regex has been entered to avoid catastrophic backtracking.

The Regex Validation property helps you define a set of validation options for a given field. Initially, content types with invalid regexes were saved, and the validation check became time-consuming when executed. Regular expressions like these either freeze the browser or utilize 100% of the CPU core process.