The SecuPress WordPress plugin, both free and pro, versions less than 2.0, were affected by a flaw that allowed unauthenticated users to ban any IP on a site that had the plugin installed, making it impossible for them to visit the site. Effectively causing a Denial of Service (DoS) to the banned IP.
2021-03-23 (about 7 months ago)
2021-03-30 (about 7 months ago)
2021-03-31 (about 7 months ago)