CVE-2026-33638
March 26, 2026
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 Packages
https://github.com/lin-snow/Ech0.git (GITHUB):
Affected version(s) >=v1.0.0 <v4.2.0Fix Suggestion:
Update to version v4.2.0https://github.com/lin-snow/Ech0.git (GITHUB):
Affected version(s) >=v1.0.0 <v4.2.0Fix Suggestion:
Update to version v4.2.0https://github.com/lin-snow/Ech0.git (GITHUB):
Affected version(s) >=v1.0.0 <v4.2.0Fix Suggestion:
Update to version v4.2.0https://github.com/lin-snow/Ech0.git (GITHUB):
Affected version(s) >=v1.0.0 <v4.2.0Fix Suggestion:
Update to version v4.2.0https://github.com/lin-snow/Ech0.git (GITHUB):
Affected version(s) >=v1.0.0 <v4.2.0Fix Suggestion:
Update to version v4.2.0https://github.com/lin-snow/Ech0.git (GITHUB):
Affected version(s) >=v1.0.0 <v4.2.0Fix Suggestion:
Update to version v4.2.0Related Resources (5)
Do you need more information?
Contact UsCVSS v4
Base Score:
6.9
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
LOW
Vulnerable System Integrity
NONE
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
5.3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
NONE
Availability
NONE
Weakness Type (CWE)
Missing Authorization
EPSS
Base Score:
0.06
