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CVE Vulnerability Details :
CVE-2026-33638
PUBLISHED
More InfoOfficial Page
Assigner-GitHub_M
Assigner Org ID-a0819718-46f1-4df5-94e2-005712e83aaa
View Known Exploited Vulnerability (KEV) details
Published At-26 Mar, 2026 | 20:52
Updated At-27 Mar, 2026 | 20:19
Rejected At-
▼CVE Numbering Authority (CNA)
Ech0 authenticated user-list exposed data via public `/api/allusers` endpoint

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.

Affected Products
Vendor
lin-snow
Product
Ech0
Versions
Affected
  • < 4.2.0
Problem Types
TypeCWE IDDescription
CWECWE-862CWE-862: Missing Authorization
Type: CWE
CWE ID: CWE-862
Description: CWE-862: Missing Authorization
Metrics
VersionBase scoreBase severityVector
3.15.3MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Version: 3.1
Base score: 5.3
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://github.com/lin-snow/Ech0/security/advisories/GHSA-m983-7426-5hrj
x_refsource_CONFIRM
https://github.com/lin-snow/Ech0/commit/acbf1fd71011e6b9e1e6a911128056a19862f681
x_refsource_MISC
https://github.com/lin-snow/Ech0/releases/tag/v4.2.0
x_refsource_MISC
Hyperlink: https://github.com/lin-snow/Ech0/security/advisories/GHSA-m983-7426-5hrj
Resource:
x_refsource_CONFIRM
Hyperlink: https://github.com/lin-snow/Ech0/commit/acbf1fd71011e6b9e1e6a911128056a19862f681
Resource:
x_refsource_MISC
Hyperlink: https://github.com/lin-snow/Ech0/releases/tag/v4.2.0
Resource:
x_refsource_MISC
▼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
Details not found