EUVD-2016-10815

ZKTeco ZKBioSecurity 3.0 contains a user enumeration vulnerability that allows unauthenticated attackers to discover valid usernames by submitting partial characters via the username parameter. Attackers can send requests to the authLoginAction!login.do script with varying username inputs to...

CVE-2016-20030

CVE-2016-20030 affects ZKTeco ZKBioSecurity 3.0. The vulnerability is a user enumeration flaw in the authLoginAction!login.do endpoint that allows unauthenticated attackers to determine valid usernames by submitting partial usernames. Attack responses reveal username validity, enabling attackers ...

CVE-2016-20030 ZKTeco ZKBioSecurity 3.0 User Enumeration via authLoginAction

ZKTeco ZKBioSecurity 3.0 contains a user enumeration vulnerability that allows unauthenticated attackers to discover valid usernames by submitting partial characters via the username parameter. Attackers can send requests to the authLoginAction!login.do script with varying username inputs to...

PT-2026-25728

ZKTeco ZKBioSecurity 3.0 contains a user enumeration vulnerability that allows unauthenticated attackers to discover valid usernames by submitting partial characters via the username parameter. Attackers can send requests to the authLoginAction!login.do script with varying username inputs to...

CVE-2025-64528

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...

CVE-2025-64528

CVE-2025-64528 affects Discourse prior to versions 3.5.3, 2025.11.1, and 2025.12.0. An attacker who knows part of a username can discover the user and their full name via UI or API, even when enable_names is disabled. The issue is confirmed across multiple sources (NVD, Red Hat, OSV, OpenVAS, etc...

CVE-2017-1000221

In Opencast 2.2.3 and older if user names overlap, the Opencast search service used for publication to the media modules and players will handle the access control incorrectly so that users only need to match part of the user name used for the access restriction. For example, a user with the role...