CVE-2026-23930

Frontend DoS via the popup.testtriggerexpr action

State: Published
Severity: 5.3 Medium
Published: Aug 18, 2026
Updated: Aug 18, 2026
Reserved: Jan 19, 2026

Description

An unauthenticated user is able to cause disproportionate CPU load on the Frontend webserver by sending specifically crafted requests to the Frontend popup.testtriggerexpr action, leading to potential denial of service.

Scores

CVSS	Score	Vector	Source
4.0	5.3 Medium	CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N	Zabbix

Weaknesses

CWE-405 Asymmetric Resource Consumption (Amplification)

Affected Products

Product	Versions
ZabbixZabbix	6.0.0 through 6.0.46Affectedfrom 6.0.47Not affected 7.0.0 through 7.0.26Affectedfrom 7.0.27Not affected 7.4.0 through 7.4.10Affectedfrom 7.4.11Not affected

References

https://support.zabbix.com/browse/ZBX-28069

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