CVE-2026-79666: Missing Authorization in lin-snow Ech0
Description
Ech0 versions before 4.4.3 do not enforce administrator authorization on dashboard log endpoints, allowing any authenticated user to access sensitive system logs. This includes the ability to query logs via GET /api/system/logs and subscribe to server-sent events (SSE) and WebSocket streams, potentially exposing operational data such as file paths, stack traces, and internal URLs.
CVSS v4.0
Score 7.1high
Affected software
lin-snow
Ech0
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-79666 is a vulnerability in lin-snow Ech0 prior to version 4.4.3 where the application fails to enforce administrator authorization on dashboard log endpoints. Authenticated users with valid sessions can access sensitive system logs through GET /api/system/logs and subscribe to SSE and WebSocket log streams. This unauthorized access exposes sensitive operational information including file paths, stack traces, and internal URLs, which could aid attackers in further reconnaissance or exploitation.
Potential Impact
Any authenticated user can access sensitive operational logs without proper authorization, potentially revealing internal system details such as file paths, stack traces, and internal URLs. This exposure could facilitate further attacks or information leakage within the affected environment.
Mitigation Recommendations
No official fix or patch is currently confirmed for this vulnerability. Users should monitor the vendor's advisory for updates. Until a fix is available, restrict access to authenticated users carefully and consider additional access controls or network segmentation to limit exposure of the log endpoints.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-08-25T11:09:11.171Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6a8d820cacd9273b49225412
Added to database: 08/25/2026, 11:52:44 UTC
Last enriched: 09/10/2026, 05:52:21 UTC
Last updated: 10/08/2026, 06:48:19 UTC
Views: 70
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