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CVE-2026-23919
Zabbix Server vulnerability analysis and mitigation

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.


SourceNVD

Related Zabbix Server vulnerabilities:

CVE ID

Severity

Score

Technologies

Component name

CISA KEV exploit

Has fix

Published date

CVE-2026-23921HIGH8.7
  • Zabbix ServerZabbix Server
  • cpe:2.3:a:zabbix:zabbix
NoYesMar 24, 2026
CVE-2026-23920HIGH7.7
  • Zabbix ServerZabbix Server
  • zabbix
NoYesMar 24, 2026
CVE-2026-23919HIGH7.1
  • Zabbix ServerZabbix Server
  • zabbix
NoYesMar 24, 2026
CVE-2026-23923MEDIUM6.9
  • Zabbix ServerZabbix Server
  • cpe:2.3:a:zabbix:zabbix
NoNoMar 24, 2026
CVE-2026-23924MEDIUM6.1
  • Zabbix ServerZabbix Server
  • cpe:2.3:a:zabbix:zabbix
NoNoMar 24, 2026

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