Is CVE-2025-58446 actively exploited?

CVE-2025-58446 has no public evidence of in-the-wild exploitation as of 2025-09-18.

What is the CVSS score for CVE-2025-58446?

CVE-2025-58446 has a CVSS score of 6.9 (MEDIUM severity). Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/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.

How do I patch CVE-2025-58446?

Patch guidance is available from mlc-ai security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2025-58446.

CVE-2025-58446 - remediation guidance & executive summary

Description

xgrammar is an open-source library for efficient, flexible, and portable structured generation. A grammar optimizer introduced in 0.1.23 processes large grammars (>100k characters) at very low rates, and can be used for DOS of model providers. This issue is fixed in version 0.1.24.

CVSS Metrics

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/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
Attack Vector: network
Complexity: low
Privileges: none
User Action: none
Confidentiality: undefined
Integrity: undefined
Availability: undefined
Weaknesses: CWE-770

Metadata

Primary Vendor: MLC-AI
Published: 9/6/2025
Last Modified: 9/18/2025
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

Affected Products

mlc-ai : xgrammar

Remediation Guidance

Executive Summary

Cite this page

CVE-2025-58446. CVEDatabase.com. Retrieved 1 May 2026. https://cvedatabase.com/cve/CVE-2025-58446

View on NIST NVD

CVE-2025-58446 vulnerability