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CVE-2026-59782— JavaScript preprocessing memory disclosure

Quick assessment

Affected
Zabbix Zabbix
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Zabbix 服务器的 JavaScript 预处理引擎（Duktape）存在一个漏洞，导致受限管理员能够读取原始堆数据，从而可能导致从其他正在运行的预处理器中泄漏该管理员无权访问的数据。

CVSS 6.9 · Medium

Possible ATT&CK Techniques 1 AI

T1005 · Data from Local System
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I. Basic Information for CVE-2026-59782

Vulnerability Information
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Vulnerability Title
JavaScript preprocessing memory disclosure
Source: CVE Program / CVE List V5
Vulnerability Description
The JavaScript preprocessing (Duktape) engine on Zabbix server has a vulnerability where a limited administrator is able to read raw heap data potentially resulting in leaked data from other running preprocessors not available to said administrator.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存读
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Zabbix Zabbix 6.0.0 ~ 6.0.47 -

II. Public POCs for CVE-2026-59782

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III. Intelligence Information for CVE-2026-59782

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Other References for CVE-2026-59782 (1)

Same Patch Batch · Zabbix · 2026-10-05 · 6 CVEs total

CVE-2026-59786 6.9 MEDIUM Active agent heartbeat missing TLS check
CVE-2026-59788 5.6 MEDIUM Stored XSS vulnerability in OAuth configuration form
CVE-2026-59787 5.3 MEDIUM SNMP trap injection in zabbix_trap_receiver.pl
CVE-2026-59785 5.1 MEDIUM Hidden host credentials inferable via multiselect.get filtering
CVE-2026-59783 2.3 LOW Server DoS via binary items

IV. Related Vulnerabilities

Same product: Zabbix
Same vendor: Zabbix
Same weakness: CWE-125

V. Comments for CVE-2026-59782

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