CVE-2026-23934

Frontend DoS via the validate.api.exists action

State: Published
Severity: 5.1 Medium
Published: Aug 18, 2026
Updated: Aug 18, 2026
Reserved: Jan 19, 2026

Description

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.

Scores

CVSS	Score	Vector	Source
4.0	5.1 Medium	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	Zabbix

Weaknesses

CWE-405 Asymmetric Resource Consumption (Amplification)

Affected Products

Product	Versions
ZabbixZabbix	7.4.0 through 7.4.11Affectedfrom 7.4.12Not affected

References

https://support.zabbix.com/browse/ZBX-28072

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.