Is CVE-2025-57809 actively exploited?

CVE-2025-57809 has no public evidence of in-the-wild exploitation as of 2025-09-09.

What is the CVSS score for CVE-2025-57809?

CVE-2025-57809 has a CVSS score of 7.7 (HIGH severity). 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:P/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-2025-57809?

Patch guidance is available from mlc-ai security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2025-57809.

Fix CVE-2025-57809 - HIGH mlc-ai xgrammar

Description

XGrammar is an open-source library for efficient, flexible, and portable structured generation. Prior to version 0.1.21, XGrammar has an infinite recursion issue in the grammar. This issue has been resolved in version 0.1.21.

CVSS Metrics

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:P/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-674

Metadata

Primary Vendor: MLC-AI
Published: 8/25/2025
Last Modified: 9/9/2025
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

CVE-2025-57809

Description

CVSS Metrics

Metadata

Affected Products

Remediation Guidance

Executive Summary