Description
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
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| lin-snow | Ech0 | < 4.4.3 | 4.4.3 |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Go | github.com/lin-snow/ech0 | < 4.4.3 | 4.4.3 | GHSA-w8jj-cwmc-wgq2 |
| Go | github.com/lin-snow/ech0 | all versions | — | GO-2026-5701 |
References
- GitHub Security Advisory (GHSA-w8jj-cwmc-wgq2) vendor-advisory
- VulnCheck Advisory: Ech0 before 4.4.3 Missing Authorization on System Logs third-party-advisory