CVE-2025-11230 HIGH

CVE-2025-11230: Denial of service vulnerability in HAProxy mjson library

Vendor Haproxy Technologies
Product HAProxy Community Edition
Weakness CWE-407
Published November 19, 2025
Last update November 19, 2025
View on NVD All CVEs

CVSS base score

7.5/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality None
Integrity None

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

What the vulnerability does

01Description

Inefficient algorithm complexity in mjson in HAProxy allows remote attackers to cause a denial of service via specially crafted JSON requests.

Key dates

02Disclosure timeline

November 19, 2025 CVE published
November 19, 2025 Record updated