Description
Inefficient algorithm complexity in mjson in HAProxy allows remote attackers to cause a denial of service via specially crafted JSON requests.
Scores
CVSS v3
7.5
EPSS
0.0047
EPSS Percentile
64.5%
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