CVE-2025-11230
High
Description
Inefficient algorithm complexity in mjson in HAProxy allows remote attackers to cause a denial of service via specially crafted JSON requests.
SeverityHigh
CVSS7.5
Exploit probability—
ProductHaproxy
PublishedNov 19, 2025
First seenNov 19, 2025
Weakness typeCWE-407CWE-407
How to fix
Update
- haproxy haproxy2.4.30, 2.6.23, 2.8.16, 3.0.12, 3.1.9, 3.2.6 or later
- haproxy aloha_appliance14.5.33, 15.5.28, 16.5.19, 17.0.7 or later
- haproxy kubernetes_ingress_controller1.9.14-ee7, 3.1.12, 1.11.12-ee10, 3.0.15-ee4 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| haproxy haproxy | 2.4.0 ≤ v < 2.4.30, 2.6.0 ≤ v < 2.6.23, 2.8.0 ≤ v < 2.8.16, 3.0.0 ≤ v < 3.0.12, 3.1.0 ≤ v < 3.1.9, 3.2.0 ≤ v < 3.2.6 | 2.4.30, 2.6.23, 2.8.16, 3.0.12, 3.1.9, 3.2.6 |
| haproxy aloha_appliance | 14.5.0 ≤ v < 14.5.33, 15.5.0 ≤ v < 15.5.28, 16.5.0 ≤ v < 16.5.19, 17.0.0 ≤ v < 17.0.7 | 14.5.33, 15.5.28, 16.5.19, 17.0.7 |
| haproxy haproxy_enterprise | 2.4r1, 2.6r1, 2.8r1, 3.0r1, 3.1r1 | — |
| haproxy kubernetes_ingress_controller | v < 1.9.14-ee7, v < 3.1.12, 1.10.10-ee1 ≤ v < 1.11.12-ee10, 3.0.0-ee1 ≤ v < 3.0.15-ee4 | 1.9.14-ee7, 3.1.12, 1.11.12-ee10, 3.0.15-ee4 |
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