Review reviewHigh

CVE-2026-25048

mlc-ai xgrammar, Red Hat AI Inference Server 3.2, Red Hat OpenShift AI 2.25

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.

CVSS
8.7
EPSS
0.71%
49.8% percentile
CISA KEV
Not listed
Published
2026.03.06
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability0.71%
Technical severityCVSS 8.7

Vulnerability overview

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.

Affected product and versions

Product
mlc-ai xgrammar, Red Hat AI Inference Server 3.2, Red Hat OpenShift AI 2.25
Affected versions
>= < 0.1.32, < 0.1.32
Fixed versions
0.1.32

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that mlc-ai xgrammar, Red Hat AI Inference Server 3.2, Red Hat OpenShift AI 2.25 and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CWE
CWE-674
CVE-2026-25048 — mlc-ai xgrammar, Red Hat AI Inference Server 3.2, Red Hat OpenShift AI 2.25 | SECUFOCUS NOW