CVE-2022-23721

PingID integration for Windows login prior to 2.9 does not handle duplicate usernames, which can lead to a username collision when two people with the same username are provisioned onto the same machine at different times...

CVE-2017-18394

cPanel before 68.0.15 does not have a sufficient list of reserved usernames SEC-327...

CVE-2017-18465

cPanel before 62.0.17 does not have a sufficient list of reserved usernames SEC-227...

CVE-2020-10240

An issue was discovered in Joomla! before 3.9.16. Missing length checks in the user table can lead to the creation of users with duplicate usernames and/or email addresses...

CVE-2024-41952

Zitadel is an open source identity management system. ZITADEL administrators can enable a setting called "Ignoring unknown usernames" which helps mitigate attacks that try to guess/enumerate usernames. If enabled, ZITADEL will show the password prompt even if the user doesn't exist and report...

CVE-2024-41953

Zitadel is an open source identity management system. ZITADEL uses HTML for emails and renders certain information such as usernames dynamically. That information can be entered by users or administrators. Due to a missing output sanitization, these emails could include malicious code. This may...

EUVD-2026-1670

ZimaOS is a fork of CasaOS, an operating system for Zima devices and x86-64 systems with UEFI. In versions up to and including 1.5.0, the application checks the validity of the username but appears to skip, misinterpret, or incorrectly validate the password when the provided username matches a...

CVE-2026-21891 ZimaOS has Authentication Bypass via System-Level Username

ZimaOS is a fork of CasaOS, an operating system for Zima devices and x86-64 systems with UEFI. In versions up to and including 1.5.0, the application checks the validity of the username but appears to skip, misinterpret, or incorrectly validate the password when the provided username matches a...

CVE-2026-21891

Summary (CVE-2026-21891): ZimaOS ≤ 1.5.0 contains an authentication bypass in the login function where username validation is performed but password handling for known system service accounts is flawed. This can allow an attacker to gain authenticated access using any password when a common syste...

CVE-2026-21868

Flag Forge is a Capture The Flag CTF platform. Versions 2.3.2 and below have a Regular Expression Denial of Service ReDoS vulnerability in the user profile API endpoint /api/user/username. The application constructs a regular expression dynamically using unescaped user input the username paramete...

CVE-1999-0656

The ugidd RPC interface, by design, allows remote attackers to enumerate valid usernames by specifying arbitrary UIDs that ugidd maps to local user and group names...

CVE-1999-0361

NetWare version of LaserFiche stores usernames and passwords unencrypted, and allows administrative changes without logging...

CVE-2025-47411

A user with a legitimate non-administrator account can exploit a vulnerability in the user ID creation mechanism in Apache StreamPipes that allows them to swap the username of an existing user with that of an administrator. This vulnerability allows an attacker to gain administrative control over...

PT-2026-7017

Name of the Vulnerable Software and Affected Versions Apache Shiro versions prior to 2.0.7 Description An authentication bypass issue exists in Apache Shiro. The issue relates to bypassing authentication when accessing static files on case-insensitive filesystems by varying the case of the filena...

PT-2026-7016

Observable Timing Discrepancy vulnerability in Apache Shiro. This issue affects Apache Shiro: from 1., 2. before 2.0.7. Users are recommended to upgrade to version 2.0.7 or later, which fixes the issue. Prior to Shiro 2.0.7, code paths for non-existent vs. existing users are different enough, tha...

EulerOS Virtualization 2.13.1 : openssh (EulerOS-SA-2025-2626)

According to the versions of the openssh packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : ssh in OpenSSH before 10.1 allows control characters in usernames that originate from certain possibly untrusted sources,...

EUVD-2025-205817

Discourse is an open source discussion platform. Prior to versions 3.5.3, 2025.11.1, and 2025.12.0, an attacker who knows part of a username can find the user and their full name via UI or API, even when enablenames is disabled. Versions 3.5.3, 2025.11.1, and 2025.12.0 contain a fix...

PT-2025-54189

Discourse is an open source discussion platform. Prior to versions 3.5.3, 2025.11.1, and 2025.12.0, an attacker who knows part of a username can find the user and their full name via UI or API, even when enable names is disabled. Versions 3.5.3, 2025.11.1, and 2025.12.0 contain a fix...

MAL-2025-192961 Malicious code in awsutil (PyPI)

--- -= Per source details. Do not edit below this line.=- Source: kam193 86d4af9fafbcfb6e3789a38b426c744e4ac67da10eb1fa225be3a715189fb1c2 Dependency confusion research package with advanced module-mocking --- Category: PROBABLYPENTEST - Packages looking like typical pentest packages, but also...

CVE-2025-12492 Ultimate Member – User Profile, Registration, Login, Member Directory, Content Restriction & Membership Plugin <= 2.11.0 - Unauthenticated Sensitive Information Exposure

The Ultimate Member – User Profile, Registration, Login, Member Directory, Content Restriction & Membership Plugin plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 2.11.0 via the ajaxgetmembers function. This is due to the use of a...