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Type:
Defect (Security)
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Resolution: Fixed
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Priority:
Minor
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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-2026-59783 |
| CVSS score | 2.3 (Low) |
| CVSS vector | CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N |
| Affected components | Server, Proxy |
| Summary | Server DoS via binary items |
| Description | The Zabbix Server/Proxy has a vulnerability where binary items can crash the Server/Proxy on certain NULL byte input leading to potential loss of availability. This only affects deployments where MySQL/MariaDB database is used as the Zabbix database. |
| Known attack vectors | Attacker with trapper access sending malicious data for binary items. |
| Affected and fix version/s | 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 | Disable item data collection for any Binary items with untrusted input. |
| Acknowledgements | Zabbix wants to thank ylwango613 for submitting this report on the HackerOne bug bounty platform. |