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      <title>CVE-2026-11976 — MonsterInsights Pro 10.2.0/10.2.2 - Backdoored via AWS S3 bucket compromise</title>
      <link>https://vulnerability.circl.lu/vuln/cve-2026-11976</link>
      <description>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; Unknown MonsterInsights Pro&lt;/p&gt;
&lt;p&gt;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.&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; Unknown MonsterInsights Pro&lt;/p&gt;
&lt;p&gt;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.&lt;/p&gt;</content:encoded>
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