Vulnerability in Mlc-Ai Xgrammar
CVE-2026-25048
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.007 (51.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 52nd percentile — 51.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000
Affected products
- Mlc-Ai Xgrammar — versions < 0.1.32
Weakness classification (CWE)
References
- github.com/mlc-ai/xgrammar/security/advisories/GHSA-7rgv-gqhr-fxg3 (Exploit, Vendor Advisory)
- github.com/mlc-ai/xgrammar/releases/tag/v0.1.32 (Release Notes)
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Frequently asked questions
- What is CVE-2026-25048?
- CVE-2026-25048 is a high-severity vulnerability in Mlc-Ai Xgrammar, classified under Uncontrolled Recursion. CVSS score: 7.5/10. Published 2026-03-05.
- How severe is CVE-2026-25048?
- High severity. CVSS v3 base score is 7.5 out of 10.