← CVE Intelligence

CVE-2026-23919

Insufficient isolation of JavaScript (Duktape) execution context on Zabbix Server PUBLISHED

Description (CNA)

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>.

Affected (CNA)

Vendor / productVersions
Zabbix / Zabbixaffected 6.0.0 through 6.0.41; affected 7.0.0 through 7.0.18; affected 7.2.0 through 7.2.12; affected 7.4.0 through 7.4.2

CWE

CWE-488

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.