Vulnerability Details CVE-2026-23920
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.003
EPSS Ranking 20.0%
CVSS Severity
CVSS v3 Score 8.8
References
Products affected by CVE-2026-23920
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cpe:2.3:a:zabbix:zabbix:7.0.0
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cpe:2.3:a:zabbix:zabbix:7.0.1
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cpe:2.3:a:zabbix:zabbix:7.0.10
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cpe:2.3:a:zabbix:zabbix:7.0.11
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cpe:2.3:a:zabbix:zabbix:7.0.12
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cpe:2.3:a:zabbix:zabbix:7.0.13
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cpe:2.3:a:zabbix:zabbix:7.0.14
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cpe:2.3:a:zabbix:zabbix:7.0.15
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cpe:2.3:a:zabbix:zabbix:7.0.16
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cpe:2.3:a:zabbix:zabbix:7.0.17
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cpe:2.3:a:zabbix:zabbix:7.0.18
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cpe:2.3:a:zabbix:zabbix:7.0.19
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cpe:2.3:a:zabbix:zabbix:7.0.2
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cpe:2.3:a:zabbix:zabbix:7.0.20
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cpe:2.3:a:zabbix:zabbix:7.0.21
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cpe:2.3:a:zabbix:zabbix:7.0.3
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cpe:2.3:a:zabbix:zabbix:7.0.4
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cpe:2.3:a:zabbix:zabbix:7.0.5
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cpe:2.3:a:zabbix:zabbix:7.0.6
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cpe:2.3:a:zabbix:zabbix:7.0.7
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cpe:2.3:a:zabbix:zabbix:7.0.8
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cpe:2.3:a:zabbix:zabbix:7.0.9
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cpe:2.3:a:zabbix:zabbix:7.2.0
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cpe:2.3:a:zabbix:zabbix:7.2.1
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cpe:2.3:a:zabbix:zabbix:7.2.10
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cpe:2.3:a:zabbix:zabbix:7.2.11
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cpe:2.3:a:zabbix:zabbix:7.2.12
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cpe:2.3:a:zabbix:zabbix:7.2.13
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cpe:2.3:a:zabbix:zabbix:7.2.14
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cpe:2.3:a:zabbix:zabbix:7.2.2
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cpe:2.3:a:zabbix:zabbix:7.2.3
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cpe:2.3:a:zabbix:zabbix:7.2.4
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cpe:2.3:a:zabbix:zabbix:7.2.5
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cpe:2.3:a:zabbix:zabbix:7.2.6
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cpe:2.3:a:zabbix:zabbix:7.2.7
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cpe:2.3:a:zabbix:zabbix:7.2.8
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cpe:2.3:a:zabbix:zabbix:7.2.9
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cpe:2.3:a:zabbix:zabbix:7.4.0
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cpe:2.3:a:zabbix:zabbix:7.4.1
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cpe:2.3:a:zabbix:zabbix:7.4.2
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cpe:2.3:a:zabbix:zabbix:7.4.3
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cpe:2.3:a:zabbix:zabbix:7.4.4
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cpe:2.3:a:zabbix:zabbix:7.4.5