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.

CVSS

No CVSS.

References

Link	Resource
https://support.zabbix.com/browse/ZBX-27639

Configurations

No configuration.

History

17 Jun 2026, 10:22

Type	Values Removed	Values Added
Summary		(es) La entrada de scripts de acción de host y evento se valida con una expresión regular (regex) (establecida por el administrador), pero la validación se ejecuta en modo multilínea. Si los anclajes ^ y $ se utilizan en la validación de entrada del usuario, un salto de línea inyectado permite a los usuarios autenticados eludir la verificación e inyectar comandos de shell.

24 Mar 2026, 19:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-03-24 19:16

Updated : 2026-06-17 10:22

NVD link : CVE-2026-23920

Mitre link : CVE-2026-23920

CVE.ORG link : CVE-2026-23920

JSON object : View

Products Affected

No product.

CWE

CWE-78

Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

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