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    <link>https://cve.radiocsirt.org</link>
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    <lastBuildDate>Mon, 05 Oct 2026 16:13:42 +0000</lastBuildDate>
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      <title>CVE-2026-93838 — SGLang through 0.5.20 Unbounded Memory Allocation via STAGING_REQ chunk_idx</title>
      <link>https://cve.radiocsirt.org/vuln/cve-2026-93838</link>
      <description>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; sgl-project sglang&lt;/p&gt;
&lt;p&gt;SGLang versions through 0.5.20 contain an unbounded memory allocation vulnerability in handle_staging_req() that fails to validate chunk_idx from ZMQ STAGING_REQ frames in prefill/decode disaggregation deployments. Attackers with access to the decode engine&amp;#39;s internal ZMQ rank port can send a frame with an extremely large chunk_idx value, causing the scheduler to allocate memory until the system runs out and terminates the process.&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; sgl-project sglang&lt;/p&gt;
&lt;p&gt;SGLang versions through 0.5.20 contain an unbounded memory allocation vulnerability in handle_staging_req() that fails to validate chunk_idx from ZMQ STAGING_REQ frames in prefill/decode disaggregation deployments. Attackers with access to the decode engine&amp;#39;s internal ZMQ rank port can send a frame with an extremely large chunk_idx value, causing the scheduler to allocate memory until the system runs out and terminates the process.&lt;/p&gt;</content:encoded>
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