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Zabbix: (An authenticated user is able to cause disproportionate CPU load on th ...) (CVE-2026-23934)

0
Medium
VulnerabilityCVE-2026-23934gcveosvubuntu-cve-2026-23934cve-2026-23934ubuntu-pro-14-04-ltsubuntu-pro-16-04-ltsubuntu-pro-18-04-ltsubuntu-pro-20-04-ltsubuntu-pro-22-04-ltsubuntu-26-04-lts
Published: 08/19/2026 (08/19/2026, 00:00:00 UTC)
Source: GCVE Database
Product: zabbix

Description

An authenticated user in Zabbix can cause disproportionate CPU load, potentially impacting system performance. This vulnerability affects multiple specific Ubuntu package versions of Zabbix. The issue does not involve user interaction or network attack vectors beyond authenticated access. The severity is assessed as medium based on the potential impact on resource consumption.

CVSS v4.0

Attack Vector
Adjacent Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
Low
User Interaction
None
Vuln. Confidentiality
None
Vuln. Integrity
None
Vuln. Availability
Low
Subsq. Confidentiality
None
Subsq. Integrity
None
Subsq. Availability
None
CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

Affected software

Ubuntu:Pro:14.04:LTSmore threats →ghsa
zabbix
pkg:deb/ubuntu/zabbix?arch=source&distro=esm-infra-legacy/trusty
Affected versions
=1:2.0.6+dfsg-1ubuntu2=1:2.2.0+dfsg-1ubuntu1=1:2.2.0+dfsg-6ubuntu1=1:2.2.1+dfsg-1ubuntu3=1:2.2.2+dfsg-1ubuntu1=1:2.2.2+dfsg-1ubuntu1+esm1=1:2.2.2+dfsg-1ubuntu1+esm3=1:2.2.2+dfsg-1ubuntu1+esm4=1:2.2.2+dfsg-1ubuntu1+esm5
Ubuntu:Pro:16.04:LTSmore threats →ghsa
zabbix
pkg:deb/ubuntu/zabbix?arch=source&distro=esm-apps/xenial
Affected versions
=1:2.4.6+dfsg-1=1:2.4.7+dfsg-1=1:2.4.7+dfsg-2=1:2.4.7+dfsg-2ubuntu2=1:2.4.7+dfsg-2ubuntu2.1=1:2.4.7+dfsg-2ubuntu2.1+esm1=1:2.4.7+dfsg-2ubuntu2.1+esm2=1:2.4.7+dfsg-2ubuntu2.1+esm3=1:2.4.7+dfsg-2ubuntu2.1+esm4
Ubuntu:Pro:18.04:LTSmore threats →ghsa
zabbix
pkg:deb/ubuntu/zabbix?arch=source&distro=esm-apps/bionic
Affected versions
=1:3.0.7+dfsg-3=1:3.0.12+dfsg-1=1:3.0.12+dfsg-1ubuntu0.1~esm1=1:3.0.12+dfsg-1ubuntu0.1~esm2=1:3.0.12+dfsg-1ubuntu0.1~esm3=1:3.0.12+dfsg-1ubuntu0.1~esm4
Ubuntu:Pro:20.04:LTSmore threats →ghsa
zabbix
pkg:deb/ubuntu/zabbix?arch=source&distro=esm-apps/focal
Affected versions
=1:4.0.4+dfsg-1build2=1:4.0.4+dfsg-1build3=1:4.0.11+dfsg-1=1:4.0.14+dfsg-1=1:4.0.15+dfsg-1=1:4.0.16+dfsg-1=1:4.0.16+dfsg-1build1=1:4.0.17+dfsg-1=1:4.0.17+dfsg-1ubuntu0.1~esm1=1:4.0.17+dfsg-1ubuntu0.1~esm2
Ubuntu:Pro:22.04:LTSmore threats →ghsa
zabbix
pkg:deb/ubuntu/zabbix?arch=source&distro=esm-apps/jammy
Affected versions
=1:5.0.8+dfsg-1build1=1:5.0.14+dfsg-1=1:5.0.17+dfsg-1=1:5.0.17+dfsg-1ubuntu0.1~esm1
Ubuntu:26.04:LTSmore threats →ghsa
zabbix
pkg:deb/ubuntu/zabbix?arch=source&distro=resolute
Affected versions
=1:7.0.10+dfsg-2build1=1:7.0.22+dfsg-1

Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.

AI-Powered Analysis

Machine-generated threat intelligence

AILast updated: 08/20/2026, 14:25:18 UTC

Technical Analysis

CVE-2026-23934 describes a vulnerability in Zabbix where an authenticated user can trigger disproportionate CPU load. The vulnerability requires low attack complexity and no user interaction but does require privileges of a logged-in user. It does not affect confidentiality, integrity, or availability directly but may degrade system performance due to excessive CPU usage. The affected versions are specific Ubuntu package builds of Zabbix across multiple LTS releases. No known exploits are reported in the wild, and no patch links are provided in the data.

Potential Impact

The impact is limited to increased CPU resource consumption caused by an authenticated user, which may degrade system performance or availability indirectly. There is no direct compromise of data confidentiality or integrity reported. No active exploitation is known.

Mitigation Recommendations

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no patch links are provided, users should monitor official Ubuntu and Zabbix advisories for updates. Restrict authenticated user privileges to trusted personnel to reduce risk.

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Technical Details

Gcve Source
db.gcve.eu
Osv Id
UBUNTU-CVE-2026-23934
Osv Schema Version
1.7.0
Ecosystems
["Ubuntu:Pro:14.04:LTS","Ubuntu:Pro:16.04:LTS","Ubuntu:Pro:18.04:LTS","Ubuntu:Pro:20.04:LTS","Ubuntu:Pro:22.04:LTS","Ubuntu:26.04:LTS"]
Cvss Version
4.0

Threat ID: 6a870a6dacd9273b49b58973

Added to database: 08/20/2026, 14:08:45 UTC

Last enriched: 08/20/2026, 14:25:18 UTC

Last updated: 10/05/2026, 06:48:15 UTC

Views: 30

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