All vulnerabilities
CVE-2026-59782

Zabbix: JavaScript preprocessing memory disclosure

Zabbix Zabbix
Open in ThreatlineRecord JSON
CVSS
6.9Medium
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.24%Chance of exploitation activity in the next 30 days, higher than 14% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version yet
Published5 Oct 2026Updated 5 Oct 2026CVE List

What fixes it

No source in this snapshot names a fixed version.

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.

Text from CVE List

Affected versions 3

  • Zabbixaffected: 6.0.0 through 6.0.47CVE List
  • Zabbixaffected: 7.0.0 through 7.0.28CVE List
  • Zabbixaffected: 7.4.0 through 7.4.12CVE List

References 1