Description
Ech0 before 4.4.3 protects the PUT /user endpoint with the profile:read scope, a read-only scope, but allows write operations including password changes. An attacker with an admin's profile:read access token can change the admin's password and login to obtain an unrestricted session token that bypasses all scope enforcement.
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-hm2h-wwwh-g49x |
| Go | github.com/lin-snow/ech0 | all versions | — | GO-2026-5431 |
References
- GitHub Security Advisory (GHSA-hm2h-wwwh-g49x) vendor-advisory
- VulnCheck Advisory: Ech0 before 4.4.3 Scope Bypass via profile:read Token third-party-advisory