#VU124421 Permissions, Privileges, and Access Controls in Zabbix - CVE-2026-23919
Published: March 25, 2026
Vulnerability identifier: #VU124421
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-23919
CWE-ID: CWE-264
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Zabbix
Zabbix
Software vendor:
Zabbix
Zabbix
Description
The vulnerability allows a remote user to bypass implemented security restrictions.
The vulnerability exists due to insufficient isolation of JavaScript (Duktape) execution context in Zabbix Server/Proxy when reusing JavaScript contexts for script items, JavaScript reprocessing, and Webhooks. A remote privileged user can overwrite built-in JavaScript functions or read global JavaScript variables to disclose sensitive information.
Exploitation requires a regular (non-super) Zabbix administrator account. The impact includes confidentiality loss where data from hosts the user does not have access to may be leaked.
Remediation
Install updates from vendor's website.