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CVE-2025-58446

Description

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.

POC

Reference

- https://github.com/mlc-ai/xgrammar/security/advisories/GHSA-9q5r-wfvf-rr7f

Github

- https://github.com/ARPSyndicate/cve-scores

- https://github.com/fkie-cad/nvd-json-data-feeds