CVE-2026-23926
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Authenticated Stored XSS in Zabbix Host Navigator Widget

Publication date: 2026-05-06

Last updated on: 2026-05-06

Assigner: Zabbix

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.
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Meta Information
Published
2026-05-06
Last Modified
2026-05-06
Generated
2026-06-16
AI Q&A
2026-05-06
EPSS Evaluated
2026-06-15
NVD
EUVD
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
zabbix zabbix *
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Exploitability
CWE
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KEV
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CWE ID Description
CWE-79 The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.
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Executive Summary

This vulnerability allows an authenticated administrator, who does not have super administrator privileges, to create a maintenance period that contains a malicious JavaScript payload.

When any user opens the tooltip for that maintenance period in the Host navigator widget, the JavaScript payload is executed.

This means the attacker can perform unauthorized actions depending on which user views the tooltip.

Impact Analysis

The impact of this vulnerability is that an attacker with limited administrative privileges can execute arbitrary JavaScript code in the context of other users.

This can lead to unauthorized actions being performed on behalf of those users, potentially compromising system integrity, confidentiality, or availability.

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