medium5.3
CVE-2026-33638
Ech0 is an open-source, self-hosted publishing platform for personal idea sharing.
Impact
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.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| go | github.com/lin-snow/ech0 | < 1.4.8-0.20260322121226-acbf1fd71011 | 1.4.8-0.20260322121226-acbf1fd71011 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Ech0 | Ech0 | before 4.2.0 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-m983-7426-5hrj
- https://github.com/lin-snow/Ech0/security/advisories/GHSA-m983-7426-5hrj
- https://github.com/lin-snow/Ech0/commit/acbf1fd71011e6b9e1e6a911128056a19862f681
- https://github.com/lin-snow/Ech0/releases/tag/v4.2.0
- https://nvd.nist.gov/vuln/detail/CVE-2026-33638