CVE-2025-11230

highpriority · track · 0EPSS 0.007 · 54 %ileDEEURUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.74% (54th) EPSS

CVSS 7.5 · high

Is it mine?

82 products

Check your exposure

Who says so?

6 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-27

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

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

Fixedhaproxy-0:3.2.0+git0.e134140d2-160000.3.1.ppc64le as component of SUSE Linux Enterprise High Availability Extension 16.0suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedhaproxy-0:3.2.0+git0.e134140d2-160000.3.1.s390x as component of SUSE Linux Enterprise High Availability Extension 16.0suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedhaproxy-0:3.2.0+git0.e134140d2-160000.3.1.x86_64 as component of SUSE Linux Enterprise High Availability Extension 16.0suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedhaproxy-0:3.2.0+git0.e134140d2-160000.3.1.ppc64le as component of SUSE Linux Enterprise Server for SAP applications 16.0suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedhaproxy-0:3.2.0+git0.e134140d2-160000.3.1.x86_64 as component of SUSE Linux Enterprise Server for SAP applications 16.0suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedhaproxy-0:3.2.0+git0.e134140d2-160000.3.1.aarch64 as component of SUSE Linux Micro 6.2suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedhaproxy-0:3.2.0+git0.e134140d2-160000.3.1.ppc64le as component of SUSE Linux Micro 6.2suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedhaproxy-0:3.2.0+git0.e134140d2-160000.3.1.s390x as component of SUSE Linux Micro 6.2suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedhaproxy-0:3.2.0+git0.e134140d2-160000.3.1.x86_64 as component of SUSE Linux Micro 6.2suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedhaproxy-0:3.2.0+git0.e134140d2-160000.3.1.aarch64 as component of openSUSE Leap 16.0suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedhaproxy-0:3.2.0+git0.e134140d2-160000.3.1.ppc64le as component of openSUSE Leap 16.0suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedhaproxy-0:3.2.0+git0.e134140d2-160000.3.1.s390x as component of openSUSE Leap 16.0suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Fixedhaproxy-0:3.2.0+git0.e134140d2-160000.3.1.x86_64 as component of openSUSE Leap 16.0suse_csaf
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

cvss

Technical severity, 0–10. One row per scoring source.

7.5

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 5.3–7.5

v3.17.5highAV:P/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · ENISA EU

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · security@ubuntu.comexploitability 3.9 · impact 3.6

v3.16.9mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)

v3.15.3mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Lsecondary · SUSE Product Security

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: yes · Technical Impact: partialcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-407USCWE-407US

affected products (82)

Products and version ranges known to be affected.

HAProxy ALOHA Enterprise <14.5.33all versionscert_bundDE
HAProxy ALOHA Enterprise <15.5.28all versionscert_bundDE
HAProxy ALOHA Enterprise <16.5.19all versionscert_bundDE
HAProxy ALOHA Enterprise <17.0.7all versionscert_bundDE
HAProxy HAProxy Community Edition <2.4.30all versionscert_bundDE
HAProxy HAProxy Community Edition <2.6.23all versionscert_bundDE
HAProxy HAProxy Community Edition <2.8.16all versionscert_bundDE
HAProxy HAProxy Community Edition <3.0.12all versionscert_bundDE
HAProxy HAProxy Community Edition <3.1.9all versionscert_bundDE
HAProxy HAProxy Community Edition <3.2.6all versionscert_bundDE
HAProxy HAProxy Enterprise <hapee-2.4r1-lb-1.0.0-294.1446all versionscert_bundDE
HAProxy HAProxy Enterprise <hapee-2.6r1-lb-1.0.0-301.1704all versionscert_bundDE
HAProxy HAProxy Enterprise <hapee-2.8r1-lb-1.0.0-327.1146all versionscert_bundDE
HAProxy HAProxy Enterprise <hapee-3.0r1-lb-1.0.0-346.795all versionscert_bundDE
HAProxy HAProxy Enterprise <hapee-3.1r1-lb-1.0.0-349.585all versionscert_bundDE
Oracle Linuxall versionscert_bundDEcpe:/o:oracle:linux:-
RESF Rocky Linuxall versionscert_bundDEcpe:/o:resf:rocky_linux:-
Red Hat Enterprise Linuxall versionscert_bundDEcpe:/o:redhat:enterprise_linux:-
SUSE Linuxall versionscert_bundDEcpe:/o:suse:suse_linux:-
Ubuntu Linuxall versionscert_bundDEcpe:/o:canonical:ubuntu_linux:-

showing 20 of 82

advisories (6)

Vendor and ecosystem advisories describing this.

SUSE-SU-2026:20092-1Security update for haproxy2026-01-14csaf · suse_csafDE
Security update for haproxy
SUSE-SU-2026:20094-1Security update for haproxy2026-01-14csaf · suse_csafDE
Security update for haproxy
SUSE-SU-2026:20109-1Security update for haproxy2026-01-14csaf · suse_csafDE
Security update for haproxy
WID-SEC-W-2025-2209HAProxy und HAProxy ALOHA: Schwachstelle ermöglicht Denial of ServiceDeutsch2025-10-05csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann eine Schwachstelle in HAProxy und HAProxy ALOHA ausnutzen, um einen Denial of Service Angriff durchzuführen.
openSUSE-SU-2026:20032-1Security update for haproxy2026-01-14csaf · suse_csafDE
Security update for haproxy
BIT-haproxy-2025-11230Denial of service vulnerability in HAProxy mjson library2025-12-20vendor · osvUS
Inefficient algorithm complexity in mjson in HAProxy allows remote attackers to cause a denial of service via specially crafted JSON requests.

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cert_bund suse_csaf osv NVD CVE.org MITRE

published 2025-11-19modified 2026-10-18

references (4)

External citations — patches, advisories, analysis.

scry

Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.

Free scan