CVE-2026-33638

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CVSS 3.1

5.3 medium

EPSS

<1%p40

Published

Mar 26, 2026 (Mar 26, 2026)

Modified

Jun 17, 2026

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.

Vendors: ech0
Products: ech0
Weakness: CWE-862
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

NVD CVE.org GitHub PoCs EPSS (0.5%)

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