CVE-2025-58446 (GCVE-0-2025-58446)

Vulnerability from cvelistv5 – Published: 2025-09-06 19:06 – Updated: 2025-09-08 17:55
VLAI?
Title
xgrammar vulnerable to denial of service by huge enum grammar
Summary
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 fixed in version 0.1.24.
Severity ?
6.9 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
CWE
  • CWE-770 - Allocation of Resources Without Limits or Throttling
Assigner
References
Impacted products
Vendor Product Version
mlc-ai xgrammar Affected: = 0.1.23, < 0.1.24
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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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