CVE-2026-25048
xgrammar: Multi-layer nesting causes DoS
CVSS Score
7.5
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-674 |
| Vendor | mlc-ai |
| Product | xgrammar |
| Published | Mar 5, 2026 |
| Last Updated | Jul 21, 2026 |
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Affected Versions
mlc-ai / xgrammar
< 0.1.32
References
github.com: https://github.com/mlc-ai/xgrammar/security/advisories/GHSA-7rgv-gqhr-fxg3 github.com: https://github.com/mlc-ai/xgrammar/releases/tag/v0.1.32 access.redhat.com: https://access.redhat.com/security/cve/CVE-2026-25048 bugzilla.redhat.com: https://bugzilla.redhat.com/show_bug.cgi?id=2444840 security.access.redhat.com: https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-25048.json access.redhat.com: https://access.redhat.com/errata/RHSA-2026:6761 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:5809 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:6762 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:42644 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:24977