CVE-2026-33638

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.

PUBLISHED Reserved 2026-03-23 | Published 2026-03-26 | Updated 2026-03-27 | Assigner GitHub_M

Problem types

CWE-862: Missing Authorization

Product status

References

github.com/...w/Ech0/security/advisories/GHSA-m983-7426-5hrj

github.com/...ommit/acbf1fd71011e6b9e1e6a911128056a19862f681

github.com/lin-snow/Ech0/releases/tag/v4.2.0

cve.org (CVE-2026-33638)

nvd.nist.gov (CVE-2026-33638)

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