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I. Basic Information for CVE-2025-57809
Vulnerability Information

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Vulnerability Title
XGrammar affected by Denial of Service by infinite recursion grammars
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
未经控制的递归
Source: NVD (National Vulnerability Database)
Vulnerability Title
XGrammar 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
XGrammar是mlc-ai开源的一个快速、灵活、便携的结构化生成工具。 XGrammar 0.1.21之前版本存在安全漏洞,该漏洞源于语法中存在无限递归问题。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
VendorProductAffected VersionsCPESubscribe
mlc-aixgrammar < 0.1.21 -
II. Public POCs for CVE-2025-57809
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III. Intelligence Information for CVE-2025-57809
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IV. Related Vulnerabilities
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