MarkItUp is a technology platform tracked across 1 threat cluster and 1 intelligence report mention on ThreatCluster. First observed March 1, 2026; most recent activity March 1, 2026.
A code injection vulnerability has been identified in MaxSite CMS versions up to 109.1, affecting the MarkItUp Preview AJAX Endpoint. This flaw allows remote attackers to execute arbitrary code via manipulated input…