Vulnerability · Published May 6, 2026 · Assigned by Zabbix
CVE-2026-23928Stored XSS vulnerability in the Item history/Plain text widget
High 7.3
In plain English
A high-severity cross-site scripting in Zabbix from Zabbix. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 18% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | zabbix | no fix listed | DEBIAN-CVE-2026-23928 |
| Debian:13 | zabbix | no fix listed | DEBIAN-CVE-2026-23928 |
| Debian:14 | zabbix | 1:7.0.27+dfsg-1 | DEBIAN-CVE-2026-23928 |
| Ubuntu:25.10 | zabbix | no fix listed | UBUNTU-CVE-2026-23928 |
| Ubuntu:26.04:LTS | zabbix | no fix listed | UBUNTU-CVE-2026-23928 |
| Ubuntu:26.10 | zabbix | no fix listed | UBUNTU-CVE-2026-23928 |
Affected products (as reported)
Weakness: CWE-79 · 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