Wordfence announced 10 hours ago that the CleanTalk AntiSpam Plugin should be updated immediately due to a vulnerability being patched. If you need help with your wordpress security maintanence call me at 808 283 7651.
Follow https://www.wordfence.com/blog/2021/05/sql-injection-vulnerability-patched-in-cleantalk-antispam-plugin to find out the gritty details.