Description
Ech0 before 4.5.1 contains an authorization bypass vulnerability where session tokens skip scope validation in RequireScopes middleware, allowing logged-in non-admin users to access admin endpoints. Attackers can read system logs, visitor statistics, user emails, and subscribe to live WebSocket logs by sending authenticated session tokens to unprotected endpoints.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| lin-snow | Ech0 | < 4.5.1 | 4.5.1 |
References
- GitHub Security Advisory (GHSA-hmmq-qh6g-6wgh) vendor-advisory
- VulnCheck Advisory: Ech0 before 4.5.1 Authorization Bypass via Session Tokens third-party-advisory