Unknown Monsterinsights Pro vulnerabilities

1 vulnerability

Known vulnerabilities in Unknown Monsterinsights Pro, newest first, with CVSS severity, EPSS, KEV listings, ransomware use and the affected versions.

10CriticalCVE-2026-11976unknown · monsterinsights pro +1 moreMonsterInsights Pro 10.2.0/10.2.2 - Backdoored via AWS S3 bucket compromiseThe official MonsterInsights Pro update distribution bucket (`monster-insights.s3.amazonaws.com`) was compromised. Both the current release (10.2.2) and the version MonsterInsights rolled back to (10.2.0) contain a malicious file, `class-system-check.php`. Three distinct variants were observed on 2026-06-11, all sharing the same AES-256-GCM key, confirming a single threat actor. The attacker retains write access to the S3 bucket and has been actively iterating on the payload throughout the day.EPSS0.52%