Zabbix 6.0.x < 6.0.45 / 7.0.x < 7.0.24 / 7.4.x < 7.4.8 XSS (ZBX-27760)

high Nessus Plugin ID 314956

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Synopsis

A monitoring application installed on the remote host is affected by a cross-site scripting vulnerability.

Description

The version of Zabbix Server installed on the remote host is prior to 6.0.45, 7.0.24, 7.4.8. It is, therefore, affected by a stored cross-site scripting (XSS) vulnerability. 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 that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Upgrade to Zabbix version 6.0.45, 7.0.24, 7.4.8 or later.

Plugin Details

Severity: High

ID: 314956

File Name: zabbix_ZBX-27760.nasl

Version: 1.2

Type: Local

Agent: unix

Family: Misc.

Published: 5/15/2026

Updated: 5/18/2026

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.8

CVSS v2

Risk Factor: Medium

Base Score: 5.8

Temporal Score: 4.3

Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:N

CVSS Score Source: CVE-2026-23928

CVSS v3

Risk Factor: Medium

Base Score: 6.1

Temporal Score: 5.3

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

CVSS v4

Risk Factor: High

Base Score: 7.3

Threat Score: 4.4

Threat Vector: CVSS:4.0/E:U

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

Vulnerability Information

CPE: cpe:/a:zabbix:zabbix_server

Required KB Items: installed_sw/Zabbix Server

Exploit Ease: No known exploits are available

Patch Publication Date: 5/6/2026

Vulnerability Publication Date: 5/6/2026

Reference Information

CVE: CVE-2026-23928

IAVA: 2026-A-0438

Detections

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