Uncontrolled recursion in XGrammar - CVE-2025-57809
Published: November 4, 2025
Vulnerability identifier: #VU118091
CSH Severity: Medium
CVSS v4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2025-57809
CWE-ID: CWE-674
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to perform a denial of service (DoS) attack.
The vulnerability exists due to uncontrolled recursion. A remote user can pass specially crafted input to the application and perform a denial of service attack.
Affected software
XGrammar
How to mitigate CVE-2025-57809
Install updates from vendor's website.
XGrammar - update to 0.1.21