Description
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.
Scores
CVSS v3
7.5
EPSS
0.0003
EPSS Percentile
9.3%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-674
Status
published
Products (2)
mlc-ai/xgrammar
< 0.1.21
pypi/xgrammar
0 - 0.1.21PyPI
Published
Aug 25, 2025
Tracked Since
Feb 18, 2026