CVE-2026-33638CWE-862

Ech0 authenticated user-list exposed data via public `/api/allusers` endpoint

Medium · published March 26, 2026

CVSS v3.1
5.3
EPSS
1%
Percentile
50.0
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
5.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00638 · 50.0th percentile
Weakness
CWE-862 · Missing Authorization
Published
2026-03-26T20:52Z
EPSS history
Timeline
  • 26 MAR 20:52Z
    Ech0 authenticated user-list exposed data via public `/api/allusers` endpoint
    cvelistv5