CVE-2026-23934 is a vulnerability in Zabbix
Published on August 18, 2026
Frontend DoS via the validate.api.exists action
An authenticated user is able to cause disproportionate CPU load on the Frontend webserver by sending specifically crafted requests to the Frontend validate.api.exists action, leading to potential denial of service.
Vulnerability Analysis
Weakness Type
What is an Amplification Vulnerability?
Software that does not appropriately monitor or control resource consumption can lead to adverse system performance. This situation is amplified if the software allows malicious users or attackers to consume more resources than their access level permits. Exploiting such a weakness can lead to asymmetric resource consumption, aiding in amplification attacks against the system or the network.
CVE-2026-23934 has been classified to as an Amplification vulnerability or weakness.
Products Associated with CVE-2026-23934
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Affected Versions
Zabbix:- Version 7.4.0, <= 7.4.11 is affected.