CVE-2026-33638

Published: Mar 26, 2026Modified: Mar 31, 2026

5.3

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Exploitability: 3.9 / Impact: 1.4

Source: security-advisories@github.com (Secondary)

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.

Affected (1)

Products: Ech0: Ech0

1 product

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Ech0 Ech0	Before 4.2.0

Related CWEs

Missing Authorization

The product does not perform an authorization check when an actor attempts to access a resource or perform an action.

References (3)

https://github.com/lin-snow/Ech0/commit/acbf1fd71011e6b9e1e6a911128056a19862f681

Source: security-advisories@github.com

Patch

https://github.com/lin-snow/Ech0/releases/tag/v4.2.0

Source: security-advisories@github.com

ProductRelease Notes

https://github.com/lin-snow/Ech0/security/advisories/GHSA-m983-7426-5hrj

Source: security-advisories@github.com

Vendor Advisory

Timeline

No history available yet.