nvd.nist.gov
https://nvd.nist.gov/vuln/detail/CVE-2026-23919 CVE-2026-23919
HIGH
Insufficient isolation of JavaScript (Duktape) execution context on Zabbix Server
Record summary
CVE-2026-23919 has a selected CVSS score of 7.1 (high).
Description
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>.
Description source: CVE List
Exploitation context
CISA SSVC decision
ExploitationNone
AutomatableNo
Technical impactPartial
CISA Coordinator · SSVC 2.0.3 · Evaluated Mar 24, 2026 · Source: CVE List
Affected products and versions
1| Product | Source | Version range | Status |
|---|---|---|---|
ZabbixBrowse Zabbix / ZabbixDefault status: unknown | CVE List | 6.0.0 to ≤ 6.0.41 | affected |
| 7.0.0 to ≤ 7.0.18 | affected | ||
| 7.2.0 to ≤ 7.2.12 | affected | ||
| 7.4.0 to ≤ 7.4.2 | affected |
References
2support.zabbix.com
https://support.zabbix.com/browse/ZBX-27638