Vulnerability in Haproxy Aloha Appliance
CVE-2025-11230
Inefficient algorithm complexity in mjson in HAProxy allows remote attackers to cause a denial of service via specially crafted JSON requests.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.007 (50.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 51st percentile — 50.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000
Affected products
- Haproxy Aloha Appliance
- Haproxy
- Haproxy Enterprise — versions 2.4r1, 2.6r1, 2.8r1
- Haproxy Kubernetes Ingress Controller
- Haproxy Technologies Community Edition — versions 2.4.0, 2.6.0, 2.8.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
Frequently asked questions
- What is CVE-2025-11230?
- CVE-2025-11230 is a high-severity vulnerability in Haproxy Aloha Appliance, classified under Inefficient Algorithmic Complexity. CVSS score: 7.5/10. Published 2025-11-19.
- How severe is CVE-2025-11230?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2025-11230 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.