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Vulnerability Intelligence

CVE-2025-57809

HIGH7.7

XGrammar affected by Denial of Service by infinite recursion grammars

Published Aug 25, 2025

Modified 4 months ago

No fix available

Details

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.

References

WEBhttps://github.com/mlc-ai/xgrammar/commit/b943feacb5a1caf4d39de8ec3bf7c7ce066dcee5 WEBhttps://github.com/mlc-ai/xgrammar/issues/250 WEBhttps://github.com/mlc-ai/xgrammar/security/advisories/GHSA-5cmr-4px5-23pc ADVISORYhttps://www.cve.org/CVERecord?id=CVE-2025-57809

CVSS Analysis

CVSS v4.0

7.7

Exploitability

Attack Vector

NetworkAV:N

Attack Complexity

LowAC:L

Attack Requirements

NoneAT:N

Privileges Required

NonePR:N

User Interaction

NoneUI:N

Vulnerable System

Vuln. Confidentiality

NoneVC:N

Vuln. Integrity

NoneVI:N

Vuln. Availability

HighVA:H

Subsequent System

Subseq. Confidentiality

NoneSC:N

Subseq. Integrity

NoneSI:N

Subseq. Availability

NoneSA:N

7.7/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

Weakness Type (CWE)

Other

Ecosystems

Timeline

PublishedAug 25, 2025

ModifiedAug 26, 2025

CVE-2025-57809 | Mondoo Vulnerability Intelligence