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Package · PyPI

xgrammar

4 known vulnerabilities.

All Critical High Medium Low Exploited only Public exploit

4 results · Feed

  • High 8.7
    CVE-2026-25048

    xgrammar: Multi-layer nesting causes DoS

    xgrammar is an open-source library for efficient, flexible, and portable structured generation. Prior to version 0.1.32, the multi-level nested syntax caused a segmentation fault (core dumped). This issue has been patched in version 0.1.32.

    mlc-ai xgrammar xgrammar PyPI
  • Medium 6.9
    CVE-2025-58446

    xgrammar vulnerable to denial of service by huge enum grammar

    xgrammar is an open-source library for efficient, flexible, and portable structured generation. A grammar optimizer introduced in 0.1.23 processes large grammars (>100k characters) at very low rates, and can be used for DOS of model providers. This issue is f…

    mlc-ai xgrammar xgrammar PyPI
  • High 7.7
    CVE-2025-57809

    XGrammar affected by Denial of Service by infinite recursion grammars

    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.

    mlc-ai xgrammar xgrammar PyPI
  • Medium 6.5
    CVE-2025-32381

    Denial of Service by abusing xgrammar unbounded cache in memory

    XGrammar is an open-source library for efficient, flexible, and portable structured generation. Prior to 0.1.18, Xgrammar includes a cache for compiled grammars to increase performance with repeated use of the same grammar. This cache is held in memory. Since…

    mlc-ai xgrammar xgrammar PyPI