CVE-2026-23919 (GCVE-0-2026-23919)

Vulnerability from cvelistv5 – Published: 2026-03-24 18:26 – Updated: 2026-04-22 07:06
VLAI
Title
Insufficient isolation of JavaScript (Duktape) execution context on Zabbix Server
Summary
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>.
Severity
7.1 (High)
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
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-488 - Exposure of Data Element to Wrong Session
Assigner
References
Impacted products
Vendor Product Version
Zabbix Zabbix Affected: 6.0.0 , ≤ 6.0.41 (git)
Affected: 7.0.0 , ≤ 7.0.18 (git)
Affected: 7.2.0 , ≤ 7.2.12 (git)
Affected: 7.4.0 , ≤ 7.4.2 (git)
Create a notification for this product.
Credits
Zabbix wants to thank Yerdan (big_john) for submitting this report on the HackerOne bug bounty platform.
Show details on NVD website
To clipboard 

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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
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