CVE-2026-23934

5.1 mediumEPSS 0.6%

Medium (5.1) in zabbix zabbix. EPSS 0.6% chance of exploitation in the next 30 days.

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.

Severity

CVSS 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

CVSS 3.1

6.5 medium

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS: 0.6% chance of exploitation in the next 30 days; higher than 46% of CVEs (scores of 2026-10-31)
CWE: CWE-405
Published: 2026-08-18
Modified: 2026-09-23
Record from: the NVD, synced 2026-10-19

Affected

zabbix:zabbix

References

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

Check your stack JSON