HIGH 7.5

PYSEC-2026-2322

Details

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.

Are you affected?

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Affected packages

PyPI / xgrammar

Introduced in: 0 Fixed in: 0.1.32

Fix pip install --upgrade 'xgrammar>=0.1.32'

References

https://access.redhat.com/security/cve/CVE-2026-25048 [WEB]
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-25048.json [WEB]
https://access.redhat.com/errata/RHSA-2026:24977 [ADVISORY]
https://access.redhat.com/errata/RHSA-2026:5809 [ADVISORY]
https://access.redhat.com/errata/RHSA-2026:6761 [ADVISORY]
https://access.redhat.com/errata/RHSA-2026:6762 [ADVISORY]
https://github.com/mlc-ai/xgrammar/releases/tag/v0.1.32 [ADVISORY]
https://bugzilla.redhat.com/show_bug.cgi?id=2444840 [REPORT]
https://github.com/mlc-ai/xgrammar/security/advisories/GHSA-7rgv-gqhr-fxg3 [EVIDENCE]