CVE-2025-11230

HIGH

HAProxy Aloha Appliance 14.5.0-14.5.32 and HAProxy 2.4.0-2.4.29 - Denial of Service via mjson JSON Request Parsing

Title source: llm
STIX 2.1

Description

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

References (1)

Core 1

Scores

CVSS v3 7.5
EPSS 0.0046
EPSS Percentile 36.2%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

CWE
CWE-407
Status published
Products (3)
haproxy/aloha_appliance 14.5.0 - 14.5.33
haproxy/haproxy 2.4.0 - 2.4.30
haproxy/haproxy_enterprise 2.4r1 1.0.0-253.271 (48 CPE variants)
Published Nov 19, 2025
Tracked Since Feb 18, 2026