Vulnerabilities (CVE)

Filtered by CWE-551
Total 3 CVE
CVE Vendors Products Updated CVSS v2 CVSS v3
CVE-2016-20030 2026-03-16 N/A 9.8 CRITICAL
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 enumerate valid user accounts based on application responses.
CVE-2026-0707 2026-03-05 N/A 5.3 MEDIUM
A flaw was found in Keycloak. The Keycloak Authorization header parser is overly permissive regarding the formatting of the "Bearer" authentication scheme. It accepts non-standard characters (such as tabs) as separators and tolerates case variations that deviate from RFC 6750 specifications.
CVE-2023-6394 2 Quarkus, Redhat 2 Quarkus, Build Of Quarkus 2026-02-25 N/A 7.4 HIGH
A flaw was found in Quarkus. This issue occurs when receiving a request over websocket with no role-based permission specified on the GraphQL operation, Quarkus processes the request without authentication despite the endpoint being secured. This can allow an attacker to access information and functionality outside of normal granted API permissions.