CVE-2019-13177: Improper Verification of Cryptographic Signature in django-rest-registration

The vulnerability is a high severity one. Anyone using Django REST Registration library versions 0.2.* - 0.4.* with e-mail verification option (which is recommended, but needs additional configuration) is affected. In the worst case, the attacker can take over any Django user by resetting his/her password without even receiving the reset password verification link, just by guessing the signature from publicly available data (more detailed description below).