We just got the following message from WordPress.com over the weekend,
Has anyone else had this issue?
“A recent security scan identified and immediately fixed an issue on your site: https://______.com.au
WordPress.com found that the advanced-custom-fields-pro plugin contains a vulnerability. In order to protect your site and your visitors, the security system automatically removed the entire extension. Since this may have altered the appearance of your site, we recommend you review your site for changes.
Our Happiness Engineers are standing by if you have any questions or concerns. Simply reply to this email to get in touch with us!
– The WordPress.com Team”
I’m sorry to hear of the issues reported here and the impact this has had.
As for the reported removals, please update to the latest version of ACF Pro to prevent this. WordPress.com has built-in security scanning which alerts our team for installations of ACF Pro below 5.9.1.