CVE-2026-41893

CVE-2026-41893 · Signal K Server's WebSocket Login Endpoint Lacks Rate Limiting (Credential Brute-Force)

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Signal K Server is a server application that runs on a central hub in a boat. Prior to version 2.25.0, the HTTP login endpoints (POST /login and POST /signalk/v1/auth/login) are protected by express-rate-limit (default: 100 attempts per 10-minute window, configurable via HTTP_RATE_LIMITS). The WebSocket login path — sending {login: {username, password}} messages over an established WebSocket connection — calls app.securityStrategy.login() directly without any rate limiting. An attacker can bypass HTTP rate limiting entirely by opening a WebSocket connection and attempting unlimited password guesses at the speed bcrypt allows (~20 attempts/sec with 10 salt rounds). This issue has been patched in version 2.25.0.

CVSS 8.7 · Высокий · EPSS 0,3% · Есть исправление

Опубликовано

2026-05-09T19:12:10.082Z

Обновлено

2026-05-14T17:50:55.289Z

Стек: node

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