The Authora : Easy login with mobile number WordPress plugin before 1.7.7 does not keep its one-time login code confidential, returning the code and a valid verification token in the response of an unauthenticated action, allowing unauthenticated attackers to log in as any user whose registered mobile number they know (including administrators) or to create arbitrary accounts.
When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.