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      <title>CVE-2026-82056 — Race Condition in MongoDB Server Text Index Query Parsing Leads to Heap Use-After-Free and Denial of Service</title>
      <link>https://vulnerability.circl.lu/vuln/cve-2026-82056</link>
      <description>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; MongoDB Server&lt;/p&gt;
&lt;p&gt;A race condition in MongoDB server&amp;#39;s text index query parsing can cause a heap use-after-free read when handling upsert retry paths. Under certain concurrent index lifecycle operations, a raw pointer to internal text index metadata may be dereferenced after the underlying structures have been freed, leading to a server crash. An authenticated user with readWrite privileges can trigger this condition through specific concurrent text-search and index management operations, resulting in denial of service for all connected clients. This&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; MongoDB Server&lt;/p&gt;
&lt;p&gt;A race condition in MongoDB server&amp;#39;s text index query parsing can cause a heap use-after-free read when handling upsert retry paths. Under certain concurrent index lifecycle operations, a raw pointer to internal text index metadata may be dereferenced after the underlying structures have been freed, leading to a server crash. An authenticated user with readWrite privileges can trigger this condition through specific concurrent text-search and index management operations, resulting in denial of service for all connected clients. This&lt;/p&gt;</content:encoded>
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