Medium severity · published Oct 5, 2026
CVE-2026-59782
JavaScript preprocessing memory disclosure
6.9
CVSS
0.2%
EPSS
No
On KEV
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.
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 15% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
ZA
Zabbix · Zabbix
6.0.0 through 6.0.47; 7.0.0 through 7.0.28; 7.4.0 through 7.4.12 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-59782
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-59782
support.zabbix.com
https://support.zabbix.com/browse/ZBX-28193
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