zabbix: For performance reasons Zabbix Server/Proxy reuses JavaScript (Duktape) contexts (used in script items, JavaScript re...
CVE-2026-23919 is fixed in zabbix on 1 platform, first by DEBIAN-CVE-2026-23919, released March 24, 2026. It is not reported as exploited. Patch Radar priority: Routine.
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 <a href='https://www.zabbix.com/documentation/7.4/en/manual/installation/known_issues#preprocessing-global-variables-are-unsafe'>in Zabbix documentation</a>.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| zabbix · Debian 13.5 (trixie) | 1:7.0.22+dfsg-1~deb13u1 | DEBIAN-CVE-2026-23919 | Mar 24, 2026 |
| zabbix · Debian 14 | 1:7.0.22+dfsg-1 | DEBIAN-CVE-2026-23919 | Mar 24, 2026 |
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