Zabbix Zabbix
CVE-2026-23919
For performance reasons Zabbix Server/Proxy reuses JavaScript (Duktape) contexts (used in script items, JavaScript reprocessing, Webhooks). This can lead to confidentiality loss where a regular (non-super) Zabbix administrator leaks data for hosts they do not have access to. A fix has been released that makes the built in Zabbix JavaScript objects read-only, but please be advised that usage of global JavaScript variables is not recommended because their content could be leaked. More information in Zabbix documentation .
What this means for your business
- It affects Zabbix. It matters if your company, or a supplier that handles your data, runs it.
- An attacker can use it remotely, over a network, with an administrator login, and without anyone at your company clicking anything.
What to do
- 1Check whether your company or your suppliers run Zabbix, and which version. The affected versions are listed further down this page.
- 2If you do, apply the vendor's fix. A patch or vendor advisory has been published.
Not sure if your company is exposed?
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Scoring
- CVSS
- 6.0 (v3.1)
- Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:L/A:L- CVSS v4
- 7.1
- Weakness
- CWE-488
- Assigned by
- security@zabbix.com
Dates
- Published
- 2026-03-24
- Last modified
- 2026-09-18
- Sources
- NVD
Affected products
- Zabbix Zabbix6.0.0 - 6.0.42, 7.0.0 - 7.0.19, 7.2.0 - 7.2.13, 7.4.0 - 7.4.3
As listed in the NVD configuration data. Not a statement about your estate.