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      <title>CVE-2026-8063 — Post-auth null pointer dereference when aggregating against a view with empty search pipeline</title>
      <link>https://cve.radiocsirt.org/vuln/cve-2026-8063</link>
      <description>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; MongoDB Inc. MongoDB Server&lt;/p&gt;
&lt;p&gt;An authenticated user can crash mongod when running $rankFusion or $scoreFusion with an empty pipeline on a view.&lt;/p&gt;
&lt;p&gt;When resolving a view, the server inspects the aggregation pipeline to determine whether it begins with an Atlas Search stage. For $rankFusion and $scoreFusion, this inspection reads the first element on each stage’s input pipeline array without first verifying that the array is non-empty. Supplying an empty pipeline causes a null pointer dereference and crashes the server.&lt;/p&gt;
&lt;p&gt;This issue affects MongoDB Server 8.2 versions prior to 8.2.7.&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; MongoDB Inc. MongoDB Server&lt;/p&gt;
&lt;p&gt;An authenticated user can crash mongod when running $rankFusion or $scoreFusion with an empty pipeline on a view.&lt;/p&gt;
&lt;p&gt;When resolving a view, the server inspects the aggregation pipeline to determine whether it begins with an Atlas Search stage. For $rankFusion and $scoreFusion, this inspection reads the first element on each stage’s input pipeline array without first verifying that the array is non-empty. Supplying an empty pipeline causes a null pointer dereference and crashes the server.&lt;/p&gt;
&lt;p&gt;This issue affects MongoDB Server 8.2 versions prior to 8.2.7.&lt;/p&gt;</content:encoded>
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