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    <lastBuildDate>Fri, 09 Oct 2026 03:57:56 +0000</lastBuildDate>
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      <title>CVE-2026-40879 — Nest: DoS via Recursive handleData in JsonSocket (TCP Transport)</title>
      <link>https://cve.radiocsirt.org/vuln/cve-2026-40879</link>
      <description>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; nestjs nest&lt;/p&gt;
&lt;p&gt;Nest is a framework for building scalable Node.js server-side applications. Prior to 11.1.19, when an attacker sends many small, valid JSON messages in one TCP frame, handleData() recurses once per message; the buffer shrinks each call. maxBufferSize is never reached; call stack overflows instead. A ~47 KB payload is sufficient to trigger RangeError. This vulnerability is fixed in 11.1.19.&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; nestjs nest&lt;/p&gt;
&lt;p&gt;Nest is a framework for building scalable Node.js server-side applications. Prior to 11.1.19, when an attacker sends many small, valid JSON messages in one TCP frame, handleData() recurses once per message; the buffer shrinks each call. maxBufferSize is never reached; call stack overflows instead. A ~47 KB payload is sufficient to trigger RangeError. This vulnerability is fixed in 11.1.19.&lt;/p&gt;</content:encoded>
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