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.

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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

Mon, 05 Oct 2026 12:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Mon, 05 Oct 2026 12:00:00 +0000

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

Mon, 05 Oct 2026 10:45:00 +0000

Type Values Removed Values Added
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.
Title JavaScript preprocessing memory disclosure
Weaknesses CWE-125
References
Metrics cvssV4_0

{'score': 6.9, 'vector': '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'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Zabbix

Published:

Updated: 2026-10-05T11:53:36.626Z

Reserved: 2026-07-07T08:30:49.859Z

Link: CVE-2026-59782

cve-icon Vulnrichment

Updated: 2026-10-05T11:53:27.419Z

cve-icon NVD

Status : Received

Published: 2026-10-05T11:16:59.360

Modified: 2026-10-05T12:17:09.877

Link: CVE-2026-59782

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-05T11:45:16Z

Weaknesses