CVE-2020-13413

An issue was discovered in Aviatrix Controller before 5.4.1204. There is a Observable Response Discrepancy from the API, which makes it easier to perform user enumeration via brute force...

CVE-2020-11576

Fixed in v1.5.1, Argo version v1.5.0 was vulnerable to a user-enumeration vulnerability which allowed attackers to determine the usernames of valid non-SSO accounts because /api/v1/session returned 401 for an existing username and 404 otherwise...

CVE-2020-27740

Citadel WebCit through 926 allows unauthenticated remote attackers to enumerate valid users within the platform. NOTE: this was reported to the vendor in a publicly archived "Multiple Security Vulnerabilities in WebCit 926" thread...

CVE-2014-4156

Proxmox VE prior to 3.2: 'AccessControl.pm' User Enumeration Vulnerability...

CVE-2019-16516

An issue was discovered in ConnectWise Control formerly known as ScreenConnect 19.3.25270.7185. There is a user enumeration vulnerability, allowing an unauthenticated attacker to determine with certainty if an account exists for a given username...

CVE-2019-3990

A User Enumeration flaw exists in Harbor. The issue is present in the "/users" API endpoint. This endpoint is supposed to be restricted to administrators. This restriction is able to be bypassed and information can be obtained about registered users can be obtained via the "search" functionality...

CVE-2019-15045

AjaxDomainServlet in Zoho ManageEngine ServiceDesk Plus 10 allows User Enumeration. NOTE: the vendor's position is that this is intended functionality...

CVE-2019-19614

An issue was discovered in Halvotec RAQuest 10.23.10801.0. The login page is vulnerable to wildcard injection, allowing an attacker to enumerate the list of users sharing an identical password. Fixed in Release 10.24.11206.1...

CVE-2019-13385

In CentOS-WebPanel.com aka CWP CentOS Web Panel 0.9.8.840, File and Directory Information Exposure in filemanager allows attackers to enumerate users and check for active users of the application by reading /tmp/login.log...

CVE-2017-1000226

Stop User Enumeration 1.3.8 allows user enumeration via the REST API...

CVE-2016-20003

The REST/JSON project 7.x-1.x for Drupal allows user enumeration, aka SA-CONTRIB-2016-033. NOTE: This project is not covered by Drupal's security advisory policy...

CVE-2019-0405

SAP Enable Now, before version 1911, leaks information about the existence of a particular user which can be used to construct a list of users, leading to a user enumeration vulnerability and Information Disclosure...

CVE-2017-8055

WatchGuard Fireware allows user enumeration, e.g., in the Firebox XML-RPC login handler. A login request that contains a blank password sent to the XML-RPC agent in Fireware v11.12.1 and earlier returns different responses for valid and invalid usernames. An attacker could exploit this...

CVE-2012-4390

1 apps/calendar/appinfo/remote.php and 2 apps/contacts/appinfo/remote.php in ownCloud before 4.0.7 allows remote authenticated users to enumerate the registered users via unspecified vectors...

CVE-2017-16629

In SapphireIMS 40971, it is possible to guess the registered/active usernames of the software from the errors it gives out for each type of user on the Login form. For "Incorrect User" - it gives an error "The application failed to identify the user. Please contact administrator for help." For...

CVE-2009-2435

The Sametime server in IBM Lotus Instant Messaging and Web Conferencing 6.5.1 generates error messages for a failed logon attempt with different time delays depending on whether the user account exists, which allows remote attackers to enumerate valid usernames...

CVE-2025-46736 Umbraco Makes User Enumeration Feasible Based on Timing of Login Response

Umbraco is a free and open source .NET content management system. Prior to versions 10.8.10 and 13.8.1, based on an analysis of the timing of post login API responses, it's possible to determine whether an account exists. The issue is patched in versions 10.8.10 and 13.8.1. No known workarounds a...

CVE-2025-46736 Umbraco Makes User Enumeration Feasible Based on Timing of Login Response

Umbraco is a free and open source .NET content management system. Prior to versions 10.8.10 and 13.8.1, based on an analysis of the timing of post login API responses, it's possible to determine whether an account exists. The issue is patched in versions 10.8.10 and 13.8.1. No known workarounds a...

GHSA-4G8M-5MJ5-C8XG Umbraco Makes User Enumeration Feasible Based on Timing of Login Response

Impact Based on an analysis of the timing of post login API responses, it's possible to determine whether an account exists. Patches Patched in 10.8.10 and 13.8.1. Workarounds None available...

Umbraco Makes User Enumeration Feasible Based on Timing of Login Response

Impact Based on an analysis of the timing of post login API responses, it's possible to determine whether an account exists. Patches Patched in 10.8.10 and 13.8.1. Workarounds None available...