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CVE-2026-25048

HIGH CVSS 4.0: 8.7 EPSS 0.08%
Updated Mar 13, 2026
Mlc-Ai
Parameter Value
CVSS 8.7 (HIGH)
Affected Versions before 0.1.32
Fixed In 0.1.32
Type CWE-674
Vendor Mlc-Ai
Public PoC No

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.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
None
No data leak
Integrity
None
No data modification
Availability
High
Complete denial of service

CVSS Vector v4.0

Weakness Type (CWE)

Vulnerable Products 1

Configuration From (including) Up to (excluding)
Mlc-Ai Xgrammar
cpe:2.3:a:mlc-ai:xgrammar:*:*:*:*:*:*:*:*
0.1.32