Skip to main content

Haproxy CVE-2025-11230

HIGH
Inefficient Algorithmic Complexity (CWE-407)
2025-11-19 security@ubuntu.com
7.5
CVSS 3.1 · NVD
Share

Severity by source

NVD PRIMARY
7.5 HIGH
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
SUSE
HIGH
qualitative
Red Hat
7.5 HIGH
qualitative

Primary rating from NVD.

CVSS VectorNVD

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

Lifecycle Timeline

3
Patch released
Apr 05, 2026 - 02:30 nvd
Patch available
Analysis Generated
Mar 28, 2026 - 19:23 vuln.today
CVE Published
Nov 19, 2025 - 10:15 nvd
HIGH 7.5

DescriptionCVE.org

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

AnalysisAI

Inefficient algorithm complexity in mjson in HAProxy allows remote attackers to cause a denial of service via specially crafted JSON requests. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Technical ContextAI

This vulnerability is classified under CWE-407. Inefficient algorithm complexity in mjson in HAProxy allows remote attackers to cause a denial of service via specially crafted JSON requests. Affected products include: Haproxy Aloha Appliance, Haproxy, Haproxy Haproxy Enterprise, Haproxy Kubernetes Ingress Controller.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

CVE-2016-5360 HIGH
7.5 Jun 30

HAproxy 1.6.x before 1.6.6, when a deny comes from a reqdeny rule, allows remote attackers to cause a denial of service

CVE-2021-40346 HIGH POC
7.5 Sep 08

An integer overflow exists in HAProxy 2.0 through 2.5 in htx_add_header that can be exploited to perform an HTTP request

CVE-2019-18277 HIGH POC
7.5 Oct 23

A flaw was found in HAProxy before 2.0.6. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no

CVE-2019-14243 HIGH POC
7.5 Jul 23

headerv2.go in mastercactapus proxyprotocol before 0.0.2, as used in the mastercactapus caddy-proxyprotocol plugin throu

CVE-2019-14241 HIGH POC
7.5 Jul 23

HAProxy through 2.0.2 allows attackers to cause a denial of service (ha_panic) via vectors related to htx_manage_client_

CVE-2023-40225 HIGH POC
7.2 Aug 10

HAProxy through 2.0.32, 2.1.x and 2.2.x through 2.2.30, 2.3.x and 2.4.x through 2.4.23, 2.5.x and 2.6.x before 2.6.15, 2

CVE-2019-8953 MEDIUM POC
6.1 Feb 20

The HAProxy package before 0.59_16 for pfSense has XSS via the desc (aka Description) or table_actionsaclN parameter, re

CVE-2019-19330 CRITICAL
9.8 Nov 27

The HTTP/2 implementation in HAProxy before 2.0.10 mishandles headers, as demonstrated by carriage return (CR, ASCII 0xd

CVE-2023-25725 CRITICAL
9.1 Feb 14

HAProxy before 2.7.3 may allow a bypass of access control because HTTP/1 headers are inadvertently lost in some situatio

CVE-2026-55203 CRITICAL
9.0 Jun 18

FastCGI framing desynchronization in HAProxy through 3.4.0 stems from a 16-bit integer overflow in the fcgi_conn demux r

CVE-2014-6269 MEDIUM POC
5.0 Sep 30

Multiple integer overflows in the http_request_forward_body function in proto_http.c in HAProxy 1.5-dev23 before 1.5.4 a

CVE-2020-11100 HIGH
8.8 Apr 02

In hpack_dht_insert in hpack-tbl.c in the HPACK decoder in HAProxy 1.8 through 2.x before 2.1.4, a remote attacker can w

Vendor StatusVendor

SUSE

Severity: High
Product Status
Container suse/sl-micro/6.0/baremetal-os-container:latest Container suse/sl-micro/6.0/base-os-container:latest Container suse/sl-micro/6.0/kvm-os-container:latest Container suse/sl-micro/6.0/rt-os-container:latest Container suse/sl-micro/6.0/toolbox:latest Container suse/sl-micro/6.1/baremetal-os-container:2.2.1-7.2 Container suse/sl-micro/6.1/base-os-container:2.2.0-4.47 Container suse/sl-micro/6.1/kvm-os-container:2.2.0-4.46 Container suse/sl-micro/6.1/rt-os-container:2.2.0-4.52 Image SL-Micro Image SL-Micro-Azure Image SL-Micro-BYOS-Azure Image SL-Micro-BYOS-EC2 Image SL-Micro-BYOS-GCE Image SL-Micro-EC2 Image SLE-Micro Image SLE-Micro-Azure Image SLE-Micro-BYOS Image SLE-Micro-BYOS-Azure Image SLE-Micro-BYOS-EC2 Image SLE-Micro-BYOS-GCE Image SLE-Micro-EC2 Image SLE-Micro-GCE Image SUSE-Multi-Linux-Manager-Proxy-BYOS-Azure Image SUSE-Multi-Linux-Manager-Proxy-BYOS-EC2 Image SUSE-Multi-Linux-Manager-Proxy-BYOS-GCE Image SUSE-Multi-Linux-Manager-Server-Azure-llc Image SUSE-Multi-Linux-Manager-Server-Azure-ltd Image SUSE-Multi-Linux-Manager-Server-BYOS-Azure Image SUSE-Multi-Linux-Manager-Server-BYOS-EC2 Image SUSE-Multi-Linux-Manager-Server-BYOS-GCE Image SUSE-Multi-Linux-Manager-Server-EC2-llc Image SUSE-Multi-Linux-Manager-Server-EC2-ltd Affected
SUSE Liberty Linux 9 Fixed
SUSE Linux Enterprise High Availability Extension 15 SP4 Fixed
SUSE Linux Enterprise High Availability Extension 15 SP5 Fixed
SUSE Linux Enterprise High Availability Extension 15 SP6 Fixed

Share

CVE-2025-11230 vulnerability details – vuln.today

This site uses cookies essential for authentication and security. No tracking or analytics cookies are used. Privacy Policy