CVE-2026-23926

Stored XSS vulnerability in Host navigator widget maintenance tooltip

State: Published
Severity: 7.3 High
Published: May 6, 2026
Updated: May 7, 2026
Reserved: Jan 19, 2026

Description

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.

Scores

CVSS	Score	Vector	Source
4.0	7.3 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	Zabbix

Weaknesses

CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Affected Products

Product	Versions
ZabbixZabbix	7.0.0 through 7.0.23Affectedfrom 7.0.24Not affected 7.4.0 through 7.4.7Affectedfrom 7.4.8Not affected

References

https://support.zabbix.com/browse/ZBX-27758

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