CVE-2026-33638

5.3 MEDIUM
Published: March 26, 2026 Modified: March 31, 2026
View on NVD

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.

AI Explanation

Get an AI-powered plain-language explanation of this vulnerability and remediation steps.

Login to generate AI explanation

CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://github.com/lin-snow/Ech0/releases/tag/v4.2.0
Source: security-advisories@github.com
Product Release Notes
https://github.com/lin-snow/Ech0/security/advisories/GHSA-m983-7426-5hrj
Source: security-advisories@github.com
Vendor Advisory

3 reference(s) from NVD

Quick Stats

CVSS v3 Score
5.3 / 10.0
EPSS (Exploit Probability)
0.1%
27th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

Affected Vendors

ech0