CVE-2026-25048: Mlc-Ai Xgrammar

High severity, CVSS 7.5. EPSS: 0.7% chance of exploitation in the next 30 days.

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.

Affected products

• Mlc-Ai Xgrammar: before 0.1.32 (fixed in 0.1.32)

Published 2026-03-05. Last modified 2026-07-21.