CVE-2026-23928

Stored XSS vulnerability in the Item history/Plain text widget

Published May 6, 2026 CVSS 4.0 · 7.3 High EPSS < 1% KEV · Not listed
Description
The Item history widget (in Zabbix 7.0+) or the Plain text widget (in Zabbix 6.0) can execute injected JavaScript when HTML display is enabled. This can allow an attacker to perform unauthorized actions depending on which user opens a dashboard containing these widgets. The malicious JavaScript would have to come from a monitored host controlled by the attacker. Note: the Item history widget is a replacement for the Plain text widget since Zabbix 7.0.

Remediation

Vendor Solution

Update the affected components to their respective fixed versions.


Vendor Workaround

Do not use HTML display in Item history/Plain text widget or disable this widget entirely in Administration -> General -> Modules (Zabbix 7.0+).

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
CPEs cpe:2.3:a:zabbix:zabbix:*:*:*:*:*:*:*:*
Metrics cvssV3_1

{'score': 6.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H'}

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Zabbix
Zabbix zabbix
Vendors & Products Zabbix
Zabbix zabbix
Type Values Removed Values Added
Description The Item history widget (in Zabbix 7.0+) or the Plain text widget (in Zabbix 6.0) can execute injected JavaScript when HTML display is enabled. This can allow an attacker to perform unauthorized actions depending on which user opens a dashboard containing these widgets. The malicious JavaScript would have to come from a monitored host controlled by the attacker. Note: the Item history widget is a replacement for the Plain text widget since Zabbix 7.0.
Title Stored XSS vulnerability in the Item history/Plain text widget
Weaknesses CWE-79
References
Metrics cvssV4_0

{'score': 7.3, 'vector': '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'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
Zabbix
Published
Updated
May 6, 2026, 12:59 PM
Reserved
Jan 19, 2026, 2:02 PM
Status
Analyzed
Published
May 6, 2026, 8:16 AM
Modified
Sep 18, 2026, 3:19 PM