Is xgrammar affected by CVE-2025-57809?

PyPI xgrammar is affected in <0.1.21.

Is CVE-2025-57809 being exploited?

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

high

CVE-2025-57809

Q: Is CVE-2025-57809 being exploited?

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

PyPI · xgrammar

Summary

XGrammar affected by Denial of Service by infinite recursion grammars

Severity: high
EPSS: 0.4% (p35)
Also known as: GHSA-5cmr-4px5-23pc
Published: 2025-08-25

References

https://github.com/mlc-ai/xgrammar/security/advisories/GHSA-5cmr-4px5-23pc
https://nvd.nist.gov/vuln/detail/CVE-2025-57809
https://github.com/mlc-ai/xgrammar/issues/250

Related advisories

CVE-2026-25048 — high · PyPI/xgrammar
CVE-2025-58446 — medium · PyPI/xgrammar
CVE-2025-32381 — 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.