CVE-2026-33638
Medium
Description
Ech0 is an open-source, self-hosted publishing platform for personal idea sharing. Prior to version 4.2.0, `GET /api/allusers` is mounted as a public endpoint and returns user records without authentication. This allows remote unauthenticated user enumeration and exposure of user profile metadata. A fix is available in v4.2.0.
SeverityMedium
CVSS5.3
Exploit probability—
ProductEch0
PublishedMar 26, 2026
First seenMar 26, 2026
Weakness typeCWE-862Missing authorization
How to fix
Update
- ech0 ech04.2.0 or later
- github.com/lin-snow/ech01.4.8-0.20260322121226-acbf1fd71011 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| ech0 ech0 | v < 4.2.0 | 4.2.0 |
| github.com/lin-snow/ech0Go | v < 1.4.8-0.20260322121226-acbf1fd71011 | 1.4.8-0.20260322121226-acbf1fd71011 |
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