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Type:
Defect (Security)
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Resolution: Fixed
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Priority:
Major
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None
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Affects Version/s: None
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Component/s: Proxy (P), Server (S)
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None
| CVE ID | CVE-2026-59782 |
| CVSS score | 6.9 (Medium) |
| CVSS 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 |
| Affected components | Server, Proxy |
| Summary | JavaScript preprocessing memory disclosure |
| 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. |
| Known attack vectors | An attacker with limited administrator access to the Zabbix Frontend defining malicious preprocessing rules. |
| Affected and fix version/s | Affected: 6.0.0 - 6.0.47 → Fixed: 6.0.48 Affected: 7.0.0 - 7.0.28 → Fixed: 7.0.29 Affected: 7.4.0 - 7.4.12 → Fixed: 7.4.13 |
| Mitigation | Update the affected components to their respective fixed versions. |
| Workarounds | - |
| Acknowledgements | Zabbix wants to thank Shaber Tseng for submitting this report on the HackerOne bug bounty platform. |