#VU116636 Input validation error in HAProxy - CVE-2025-11230
Published: October 6, 2025
Vulnerability identifier: #VU116636
Vulnerability risk: Medium
CVSSv4.0: 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:U/U:Green
CVE-ID: CVE-2025-11230
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
HAProxy
HAProxy
Software vendor:
HAProxy
HAProxy
Description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of user-supplied input when parsing number in mjson. A remote attacker can pass specially crafted input to the server and perform a denial of service (DoS) attack.
Remediation
Install updates from vendor's website.
External links
- https://www.haproxy.org/download/3.2/src/CHANGELOG
- https://www.haproxy.org/download/3.1/src/CHANGELOG
- https://www.haproxy.org/download/3.0/src/CHANGELOG
- https://www.haproxy.org/download/2.8/src/CHANGELOG
- https://www.haproxy.org/download/2.6/src/CHANGELOG
- https://www.haproxy.org/download/2.4/src/CHANGELOG