CVE-2026-23920High· 8.8▾ TwilightHost and event action script input is validated with a regex (set by the administrator), but the validation runs in multiline mode. If ^ and $ anchors are used in user input validation, an injected newline lets authenticated users bypass…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 48.4 · likelihood 0.1 · exploitation 0
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Exploit-prediction probability, daily snapshots since Sep 10.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
Last analysed / modified upstream
0.2%
0.2% → 0.3%
Host and event action script input is validated with a regex (set by the administrator), but the validation runs in multiline mode. If ^ and $ anchors are used in user input validation, an injected newline lets authenticated users bypass the check and inject shell commands.
zabbix >= 7.0.0, < 7.0.22zabbix >= 7.2.0, < 7.2.15zabbix >= 7.4.0, < 7.4.6Upgrade past the affected range:
zabbix 7.4.6Connected by shared product, vendor, weakness, or advisory.
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CVE-2026-59786Medium· 6.9Zabbix Server and Proxy accept the active agent heartbeat message regardless of the configured PSK or certificate authentication
CVE-2026-59787Medium· 5.3The Perl SNMP trap receiver script shipped with Zabbix does not properly neutralize the ZBXTRAP record delimiter in trap content
CVE-2026-59782Medium· 6.9The 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 ad…
CVE-2026-59783Low· 2.3The 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