Technology · PyPI
xgrammar (PyPI) vulnerabilities
Updated . Rebuilt every hour.
Junglewise Threat Intelligence has tracked 4 vulnerabilities in xgrammar (PyPI): 0 in the last 7 days and 2 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2025-58446, was published on 7 July 2026.
- Last 7 days
- 0
- Last 90 days
- 2
- Critical, all time
- 0
- Exploited in the wild
- 0
About xgrammar (PyPI)
An open-source library for efficient structured generation and grammar-constrained decoding in large language models.
Latest xgrammar (PyPI) vulnerabilities
- CVE-2025-58446: PYSEC-2026-2055 - xgrammar vulnerable to denial of service by huge enum grammarmediumCVSS 4EPSS 0.5%
- CVE-2025-57809: PYSEC-2026-2054 - XGrammar affected by Denial of Service by infinite recursion grammarslowCVSS 3.1EPSS 0.5%
- CVE-2026-25048: mlc-ai xgrammar uncontrolled recursion in nested syntaxhighCVSS 7.5EPSS 0.7%
- CVE-2025-32381: mlc-ai xgrammar unbounded memory cache denial of servicemediumCVSS 6.5EPSS 0.5%
Most severe xgrammar (PyPI) vulnerabilities
Exploited in the wild first, then by severity and CVSS score.
- CVE-2026-25048: mlc-ai xgrammar uncontrolled recursion in nested syntaxhighCVSS 7.5EPSS 0.7%
- CVE-2025-32381: mlc-ai xgrammar unbounded memory cache denial of servicemediumCVSS 6.5EPSS 0.5%
- CVE-2025-58446: PYSEC-2026-2055 - xgrammar vulnerable to denial of service by huge enum grammarmediumCVSS 4EPSS 0.5%
- CVE-2025-57809: PYSEC-2026-2054 - XGrammar affected by Denial of Service by infinite recursion grammarslowCVSS 3.1EPSS 0.5%
Vulnerabilities per week
The last 13 weeks, by the week each vulnerability was published.
| Week of | Bar | Vulns | Critical |
|---|---|---|---|
| 6 Jul 2026 | 2 | 0 | |
| 13 Jul 2026 | 0 | 0 | |
| 20 Jul 2026 | 0 | 0 | |
| 27 Jul 2026 | 0 | 0 | |
| 3 Aug 2026 | 0 | 0 | |
| 10 Aug 2026 | 0 | 0 | |
| 17 Aug 2026 | 0 | 0 | |
| 24 Aug 2026 | 0 | 0 | |
| 31 Aug 2026 | 0 | 0 | |
| 7 Sep 2026 | 0 | 0 | |
| 14 Sep 2026 | 0 | 0 | |
| 21 Sep 2026 | 0 | 0 | |
| 28 Sep 2026 | 0 | 0 |
How this is built
Junglewise Threat Intelligence collects vulnerabilities from NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories, and matches each one to the technologies and vendors it affects. Dates are the date a vulnerability was published, in UTC.
The pages are rebuilt from the database every hour. Frozen weekly and monthly reports never change once published, so they can be cited.
Use this data
The same data is at https://junglewise.ai/threats/technologies/xgrammar.json, for scripts and language models. It is free to reuse under CC BY 4.0 with a link back to this page.
Cite as: Junglewise Threat Intelligence, "xgrammar (PyPI) vulnerabilities", https://junglewise.ai/threats/technologies/xgrammar, 28 September 2026.