Permissions, Privileges, and Access Controls in Zabbix - CVE-2026-23919
Published: March 25, 2026
Vulnerability identifier: #VU124421
CSH Severity: Low
CVSS v4: 7 [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]
CVE-ID: CVE-2026-23919
CWE-ID: CWE-264
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
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.
Affected software
Zabbix
How to mitigate CVE-2026-23919
Install updates from vendor's website.
Zabbix - addressed in versions 6.0.41, 7.0.19, 7.2.13, 7.4.3