HIGH · 7.5

CVE-2025-11230

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

Vulnerability Description

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

CVSS Score

7.5

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH

Affected Products

VendorProductVersions
HaproxyAloha Appliance>= 14.5.0, < 14.5.33
HaproxyHaproxy>= 2.4.0, < 2.4.30
HaproxyHaproxy Enterprise2.4r1
HaproxyKubernetes Ingress Controller< 1.9.14-ee7

Related Weaknesses (CWE)

References

FAQ

What is CVE-2025-11230?

CVE-2025-11230 is a vulnerability with a CVSS score of 7.5 (HIGH). Inefficient algorithm complexity in mjson in HAProxy allows remote attackers to cause a denial of service via specially crafted JSON requests.

How severe is CVE-2025-11230?

CVE-2025-11230 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2025-11230?

Check the references section above for vendor advisories and patch information. Affected products include: Haproxy Aloha Appliance, Haproxy Haproxy, Haproxy Haproxy Enterprise, Haproxy Kubernetes Ingress Controller.