An authenticated administrator is able to crash Zabbix server or proxy by creating specifically crafted preprocessing/script item JavaScript scripts, leading to potential denial of service.

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Advisories

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Fixes

Solution

Update the affected components to their respective fixed versions.


Workaround

No workaround given by the vendor.

History

Tue, 18 Aug 2026 14:30:00 +0000

Type Values Removed Values Added
First Time appeared Zabbix
Zabbix zabbix
Vendors & Products Zabbix
Zabbix zabbix

Tue, 18 Aug 2026 12:30:00 +0000

Type Values Removed Values Added
Description An authenticated administrator is able to crash Zabbix server or proxy by creating specifically crafted preprocessing/script item JavaScript scripts, leading to potential denial of service.
Title Server DoS via JavaScript preprocessing or script items
Weaknesses CWE-248
References
Metrics cvssV4_0

{'score': 2.1, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Zabbix

Published:

Updated: 2026-08-18T13:34:38.081Z

Reserved: 2026-01-19T14:03:13.686Z

Link: CVE-2026-23938

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-08-18T13:17:22.103

Modified: 2026-08-18T14:17:01.790

Link: CVE-2026-23938

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-18T14:15:07Z

Weaknesses