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      <title>CVE-2025-57809 — XGrammar affected by Denial of Service by infinite recursion grammars</title>
      <link>https://cve.radiocsirt.org/vuln/cve-2025-57809</link>
      <description>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; mlc-ai xgrammar&lt;/p&gt;
&lt;p&gt;XGrammar is an open-source library for efficient, flexible, and portable structured generation. Prior to version 0.1.21, XGrammar has an infinite recursion issue in the grammar. This issue has been resolved in version 0.1.21.&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; mlc-ai xgrammar&lt;/p&gt;
&lt;p&gt;XGrammar is an open-source library for efficient, flexible, and portable structured generation. Prior to version 0.1.21, XGrammar has an infinite recursion issue in the grammar. This issue has been resolved in version 0.1.21.&lt;/p&gt;</content:encoded>
      <guid isPermaLink="false">https://cve.radiocsirt.org/vuln/cve-2025-57809</guid>
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    <item>
      <title>GHSA-5cmr-4px5-23pc — XGrammar affected by Denial of Service by infinite recursion grammars</title>
      <link>https://cve.radiocsirt.org/vuln/ghsa-5cmr-4px5-23pc</link>
      <description>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; PyPI: xgrammar&lt;/p&gt;
&lt;p&gt;### Summary
This issue: http://github.com/mlc-ai/xgrammar/issues/250 should have it&amp;#39;s own security advisory. Since several tools accept and pass user supplied grammars to xgrammar, and it is so easy to trigger it seems like a High.&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; PyPI: xgrammar&lt;/p&gt;
&lt;p&gt;### Summary
This issue: http://github.com/mlc-ai/xgrammar/issues/250 should have it&amp;#39;s own security advisory. Since several tools accept and pass user supplied grammars to xgrammar, and it is so easy to trigger it seems like a High.&lt;/p&gt;</content:encoded>
      <guid isPermaLink="false">https://cve.radiocsirt.org/vuln/ghsa-5cmr-4px5-23pc</guid>
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