Frontegg SAML SSO <= 1.0.1 - Unauthenticated Account Takeover via Unverified SAMLResponse

The Frontegg SAML SSO WordPress plugin through 1.0.1 does not verify the signature or issuer of SAML authentication responses before establishing a session, allowing unauthenticated attackers to log in as any user, including administrators, as well as to create arbitrary accounts.