CVE-2026-79669: Lin-Snow ECH0

Medium severity, CVSS 4.3. EPSS: 0.2% chance of exploitation in the next 30 days.

Ech0 before 4.4.3 lacks authorization checks on system log endpoints allowing any authenticated non-admin user to read and stream all server logs. Attackers can access historical logs and real-time log streams via GET /api/system/logs, GET /api/system/logs/stream, and WS /ws/system/logs to gather reconnaissance data including internal file paths, error stack traces, and application state.

Affected products

• Lin-Snow ECH0: before 4.4.3 (fixed in 4.4.3)

Published 2026-08-25. Last modified 2026-09-23.