CVE-2026-59783

Published Oct 5, 2026 Modified Oct 5, 2026 CWE-787

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.

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Weakness Type (CWE)

CWE-787 Out-of-bounds Write

References

Frequently Asked Questions

What is CVE-2026-59783? +
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.
How do I check if I'm vulnerable to CVE-2026-59783? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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