Bug 2517809 (CVE-2026-23938)

Summary: CVE-2026-23938 zabbix: Zabbix: Denial of Service via crafted JavaScript scripts
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: low Docs Contact:
Priority: low    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in Zabbix. An authenticated administrator can exploit this vulnerability by creating specially crafted JavaScript scripts within preprocessing or script items. This can lead to a denial of service (DoS) by crashing the Zabbix server or proxy.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Depends On: 2517879, 2517880, 2517881, 2517882    
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Description OSIDB Bzimport 2026-08-18 12:36:59 UTC
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.