---
id: CVE-2026-59782
title: >-
  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 ad…
summary: >-
  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 ad…
severity: medium
cvss: 6.9
cvssVector: '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'
cwe:
  - CWE-125
vendor: Zabbix
product: Zabbix
affected:
  - Zabbix >= 6.0.0 <= 6.0.47
  - Zabbix >= 7.0.0 <= 7.0.28
  - Zabbix >= 7.4.0 <= 7.4.12
published: '2026-10-05'
updated: '2026-10-05'
sourceUpdated: '2026-10-05T12:17:09.877'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-59782'
references:
  - url: 'https://support.zabbix.com/browse/ZBX-28193'
    label: security@zabbix.com
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-10-05T11:52:57.407878Z'
cvssSource: cna
ingestedAt: '2026-10-05T11:18:17.202Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.