Description (CNA)
The 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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Unknown / MonsterInsights Pro | affected 10.2.0 before 11.0.0 |
CWE
No CWE identifiers supplied.
References
ADP enrichment
No English description supplied.
No references supplied.