title: CasaOS Username Enumeration
description: CasaOS-UserService provides user management functionalities to CasaOS. Starting in version 0.4.4.3 and prior to version 0.4.7, the Casa OS Login page disclosed the username enumeration vulnerability in the login page. An attacker can enumerate the CasaOS username using the application response. If the username is incorrect application gives the error `**User does not exist**`.  If the password is incorrect application gives the error `**Invalid password**`.  Version 0.4.7 fixes this issue.
problem types: CWE-204: Observable Response Discrepancy
affected:
{
vendor: IceWhaleTech
product: CasaOS-UserService
versions:
version: >= 0.4.4.3, < 0.4.7, status: affected
}
metrics:
cvssV3_1: [
attackComplexity: LOW
attackVector: LOCAL
availabilityImpact: NONE
baseScore: 6.2
baseSeverity: MEDIUM
confidentialityImpact: HIGH
integrityImpact: NONE
privilegesRequired: NONE
scope: UNCHANGED
userInteraction: NONE
vectorString: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
version: 3.1
]