CVE-2025-55300 Information

Description

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.

Reference

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

Related CNNVD

CNNVD-202508-2041 (Published: 2025-08-18)