Vulnerability record · CVE-2026-23919 · published 24 March 2026

CVE-2026-23919: Zabbix vulnerability

Zabbix · Zabbix

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>.

7.1 CVSS 4.0 High EPSS 0.24% · top 86.0% CWE-488 · CWE-488

7.1CVSS 4.0 base score

0.24%EPSS exploitation probability, 30 days

NoNot in CISA KEV

1Affected product versions listed by NVD

1References

18 Sep 2026Last modified by NVD

Description

CVSS:4.0/AV:A/AC:L/AT:P/PR:H/UI:N/VC:H/VI:L/VA:L/SC:H/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

Zabbix Zabbix

References

Link	Tags
https://support.zabbix.com/browse/ZBX-27638	Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-23919), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.