CVE-2026-23926

EUVD-2026-27527
An authenticated (non-super) administrator can create a maintenance period with a JavaScript payload that is executed by any user that opens tooltip for that maintenance period in the Host navigator widget. This can allow the attacker to perform unauthorized actions depending on which user opens the tooltip.
Cross-site Scripting
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
ZabbixCNA
7.3 HIGH
NETWORK
LOW
HIGH
CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 13%
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
VendorProductVersionSource
zabbixzabbix
7.0.0 ≤
𝑥
≤ 7.0.23
CNA
zabbixzabbix
7.4.0 ≤
𝑥
≤ 7.4.7
CNA
Common Weakness Enumeration
References
https://support.zabbix.com/browse/ZBX-27758