Cross-site scripting in Zabbix - CVE-2026-23926
Published: May 6, 2026
Vulnerability identifier: #VU130255
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-23926
CWE-ID: CWE-79
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Zabbix
Affected software:
Zabbix
Zabbix
Detailed vulnerability description
The vulnerability allows a remote user to perform unauthorized actions.
The vulnerability exists due to cross-site scripting in the Host navigator widget maintenance tooltip when rendering a maintenance period tooltip. A remote privileged user can create a maintenance period with a malicious JavaScript payload to perform unauthorized actions.
User interaction is required to open the tooltip for the crafted maintenance period in the Host navigator widget.
How to mitigate CVE-2026-23926
Install security update from vendor's website.