CVE-2025-55300

Komari is a lightweight, self-hosted server monitoring tool designed to provide a simple and efficient solution for monitoring server performance. Prior to 1.0.4-fix1, WebSocket upgrader has disabled origin checking, enabling Cross-Site WebSocket Hijacking (CSWSH) attacks against authenticated users. Any third party website can send requests to the terminal websocket endpoint with browser's cookies, resulting in remote code execution. This vulnerability is fixed in 1.0.4-fix1.

CVSS

No CVSS.

References

Link	Resource
https://github.com/komari-monitor/komari/commit/d31d12e59febce100ab0285b93338f09aa5d6cb1
https://github.com/komari-monitor/komari/security/advisories/GHSA-q355-h244-969h

Configurations

No configuration.

History

15 Apr 2026, 00:35

Type	Values Removed	Values Added
Summary		(es) Komari es una herramienta ligera y autoalojada para la monitorización de servidores, diseñada para ofrecer una solución sencilla y eficiente para supervisar el rendimiento del servidor. Antes de la versión 1.0.4-fix1, el actualizador de WebSocket deshabilitaba la comprobación de origen, lo que permitía ataques de Cross-Site WebSocket Hijacking (CSWSH) contra usuarios autenticados. Cualquier sitio web de terceros puede enviar solicitudes al endpoint websocket del terminal con las cookies del navegador, lo que provoca la ejecución remota de código. Esta vulnerabilidad se corrigió en la versión 1.0.4-fix1.

18 Aug 2025, 18:15

Type	Values Removed	Values Added
New CVE

Information

Published : 2025-08-18 18:15

Updated : 2026-06-17 09:41

NVD link : CVE-2025-55300

Mitre link : CVE-2025-55300

CVE.ORG link : CVE-2025-55300

JSON object : View

Products Affected

No product.

CWE

CWE-79

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

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