Vulnerability Details CVE-2025-58446
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 17.4%
CVSS Severity
CVSS v3 Score 7.5
References