CVE-2026-33638

MEDIUM

5.3

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.

CVE Details

CVSS v3.1 Score5.3

SeverityMEDIUM

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

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published3/26/2026

Last Modified3/31/2026

Sourcenvd

Honeypot Sightings0

Affected Products

ech0:ech0

Weaknesses (CWE)

CWE-862

References

https://github.com/lin-snow/Ech0/commit/acbf1fd71011e6b9e1e6a911128056a19862f681(security-advisories@github.com)

https://github.com/lin-snow/Ech0/releases/tag/v4.2.0(security-advisories@github.com)

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

IOC Correlations

No correlations recorded

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