Zabbix: (An unauthenticated user is able to cause disproportionate CPU load on ...) (CVE-2026-23930)
An unauthenticated user can cause disproportionate CPU load on Zabbix, potentially leading to resource exhaustion. This vulnerability affects multiple specific versions of Zabbix packaged for Ubuntu. The issue does not require user interaction or privileges, but it does require network access to the affected service. The severity is assessed as medium based on the impact and CVSS vector provided. No known exploits are reported in the wild. Patch status is not confirmed from the available data.
AI Analysis
Technical Summary
CVE-2026-23930 describes a vulnerability in Zabbix where an unauthenticated attacker can cause disproportionate CPU load, potentially degrading service performance or availability. The CVSS 4.0 vector indicates the attack requires adjacent network access with low complexity and no privileges or user interaction, causing low impact on availability. The vulnerability affects multiple specific Ubuntu package versions of Zabbix. No vendor advisory or patch information is provided, and no known exploits are reported.
Potential Impact
An unauthenticated attacker with adjacent network access can cause excessive CPU usage on the affected Zabbix instances, potentially leading to degraded performance or denial of service conditions. The impact on confidentiality, integrity, and availability is low to none except for availability which is impacted to a low degree.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict network access to the Zabbix service to trusted users and monitor resource usage to detect abnormal CPU load.
Zabbix: (An unauthenticated user is able to cause disproportionate CPU load on ...) (CVE-2026-23930)
Description
An unauthenticated user can cause disproportionate CPU load on Zabbix, potentially leading to resource exhaustion. This vulnerability affects multiple specific versions of Zabbix packaged for Ubuntu. The issue does not require user interaction or privileges, but it does require network access to the affected service. The severity is assessed as medium based on the impact and CVSS vector provided. No known exploits are reported in the wild. Patch status is not confirmed from the available data.
CVSS v4.0
Affected software
pkg:deb/ubuntu/zabbix?arch=source&distro=esm-infra-legacy/trustypkg:deb/ubuntu/zabbix?arch=source&distro=esm-apps/xenialpkg:deb/ubuntu/zabbix?arch=source&distro=esm-apps/bionicpkg:deb/ubuntu/zabbix?arch=source&distro=esm-apps/focalpkg:deb/ubuntu/zabbix?arch=source&distro=esm-apps/jammypkg:deb/ubuntu/zabbix?arch=source&distro=resoluteRun 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
Technical Analysis
CVE-2026-23930 describes a vulnerability in Zabbix where an unauthenticated attacker can cause disproportionate CPU load, potentially degrading service performance or availability. The CVSS 4.0 vector indicates the attack requires adjacent network access with low complexity and no privileges or user interaction, causing low impact on availability. The vulnerability affects multiple specific Ubuntu package versions of Zabbix. No vendor advisory or patch information is provided, and no known exploits are reported.
Potential Impact
An unauthenticated attacker with adjacent network access can cause excessive CPU usage on the affected Zabbix instances, potentially leading to degraded performance or denial of service conditions. The impact on confidentiality, integrity, and availability is low to none except for availability which is impacted to a low degree.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict network access to the Zabbix service to trusted users and monitor resource usage to detect abnormal CPU load.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- UBUNTU-CVE-2026-23930
- Osv Schema Version
- 1.7.0
- Aliases
- []
- 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"]
- Database Specific Severity
- null
- Cvss Version
- 4.0
Threat ID: 6a870a6facd9273b49b589c7
Added to database: 08/20/2026, 14:08:47 UTC
Last enriched: 08/20/2026, 14:26:12 UTC
Last updated: 08/20/2026, 19:46:37 UTC
Views: 3
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