CVE-2026-9549

Stored cross-site scripting in the service discovery active check output in Checkmk <2.5.0p5, <2.4.0p31, <2.3.0p48, and all 2.2.0 versions allows an administrator who can configure active or custom checks to inject malicious HTML or JavaScript into check output that executes in the browser of an admin or a user with host read permissions when they run the check on the service discovery page.
References
Link Resource
https://checkmk.com/werk/17993 Vendor Advisory
Configurations

Configuration 1 (hide)

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History

23 Oct 2026, 22:10

Type Values Removed Values Added
Summary (es) Cross-site scripting almacenado en la salida de la comprobación activa de descubrimiento de servicios en Checkmk <2.5.0p5, <2.4.0p31, <2.3.0p48, y todas las versiones 2.2.0 permite a un administrador que puede configurar comprobaciones activas o personalizadas inyectar HTML o JavaScript malicioso en la salida de la comprobación que se ejecuta en el navegador de un administrador o un usuario con permisos de lectura de host cuando ejecutan la comprobación en la página de descubrimiento de servicios. (es) Cross-site scripting almacenado en la salida de la comprobación activa de descubrimiento de servicios en Checkmk anterior a 2.5.0p5, anterior a 2.4.0p31, anterior a 2.3.0p48, y todas las versiones 2.2.0 permite a un administrador que puede configurar comprobaciones activas o personalizadas inyectar HTML o JavaScript malicioso en la salida de la comprobación que se ejecuta en el navegador de un administrador o un usuario con permisos de lectura de host cuando ejecutan la comprobación en la página de descubrimiento de servicios.

Information

Published : 2026-06-08 13:16

Updated : 2026-10-23 22:10


NVD link : CVE-2026-9549

Mitre link : CVE-2026-9549

CVE.ORG link : CVE-2026-9549


JSON object : View

Products Affected

checkmk

  • checkmk
CWE
CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')