The vulnerability of the implementations of CAS, SAML, and OpenID Connect protocols in the web application for deploying distributed social networks like Mastodon allows attackers to circumvent security restrictions and gain access to user accounts.

The vulnerability of the implementation of CAS, SAML, and OpenID Connect protocols in the web application for deploying distributed social networks like Mastodon is related to deficiencies in the authentication process due to changes in the email address during login to the system. Exploiting thi...