CVE-2026-19855 [MEDIUM] – The CleanTalk WordPress plugin before 6.87 does not prevent unauthenticated, user-supplied

The CleanTalk WordPress plugin before 6.87 does not prevent unauthenticated, user-supplied comment content from being passed to WordPress’s shortcode engine, allowing any visitor to have arbitrary shortcodes registered on the site executed server-side and rendered to every subsequent visitor of the page.