Is xgrammar affected by CVE-2025-32381?

PyPI xgrammar is affected in <0.1.18.

Is CVE-2025-32381 being exploited?

Not on the CISA KEV list. EPSS exploit probability is 0.4%.

medium

CVE-2025-32381

Q: Is CVE-2025-32381 being exploited?

Not on the CISA KEV list. EPSS exploit probability is 0.4%.

PyPI · xgrammar

Summary

XGrammar is an open-source library for efficient, flexible, and portable structured generation. Prior to 0.1.18, Xgrammar includes a cache for compiled grammars to increase performance with repeated use of the same grammar. This cache is held in memory. Since the cache is unbounded, a system making

Severity: medium
EPSS: 0.4% (p32)
Also known as: GHSA-389x-67px-mjg3, PYSEC-2025-235
Published: 2025-04-09

References

https://github.com/mlc-ai/xgrammar/security/advisories/GHSA-389x-67px-mjg3
https://github.com/mlc-ai/xgrammar/pull/243
https://github.com/vllm-project/vllm/pull/16283

Related advisories

CVE-2026-25048 — high · PyPI/xgrammar
CVE-2025-57809 — high · PyPI/xgrammar
CVE-2025-58446 — medium · PyPI/xgrammar

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Sources: CISA KEV (public domain), OSV.dev & GitHub Advisory Database (CC-BY-4.0), FIRST EPSS, NVD/CWE (public domain). Served live from the Stateward advisory database.