CVE-2026-33638

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.

CVSS v3 5.3 MEDIUM

5.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.9 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/lin-snow/Ech0/commit/acbf1fd71011e6b9e1e6a911128056a19862f681	Patch
https://github.com/lin-snow/Ech0/releases/tag/v4.2.0	Product Release Notes
https://github.com/lin-snow/Ech0/security/advisories/GHSA-m983-7426-5hrj	Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:ech0:ech0:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-03-26 21:17

Updated : 2026-06-17 10:37

NVD link : CVE-2026-33638

Mitre link : CVE-2026-33638

CVE.ORG link : CVE-2026-33638

JSON object : View

Products Affected

ech0

ech0

CWE

CWE-862

Missing Authorization

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