https://www.bleepingcomputer.com/news/security/gitlab-releases-fix-for-critical-saml-authentication-bypass-flaw/

GitLab has released security updates to address a critical SAML authentication bypass vulnerability impacting self-managed installations of the GitLab Community Edition (CE) and Enterprise Edition (EE).

Security Assertion Markup Language (SAML) is a single sign-on (SSO) authentication protocol that allows users to log in across different services using the same credentials.