Django before 1.11.27, 2.x before 2.2.9, and 3.x before 3.0.1 allows account takeover. A suitably crafted email address (that is equal to an existing user's email address after case transformation of Unicode characters) would allow an attacker to be sent a password reset token for the matched user account. (One mitigation in the new releases is to send password reset tokens only to the registered user email address.)
https://www.djangoproject.com/weblog/2019/dec/18/security-releases/
https://www.debian.org/security/2020/dsa-4598
https://usn.ubuntu.com/4224-1/
https://security.netapp.com/advisory/ntap-20200110-0003/
https://security.gentoo.org/glsa/202004-17
https://seclists.org/bugtraq/2020/Jan/9
https://groups.google.com/forum/#%21topic/django-announce/3oaB2rVH3a0
https://docs.djangoproject.com/en/dev/releases/security/
http://packetstormsecurity.com/files/155872/Django-Account-Hijack.html
Published: 2019-12-18
Updated: 2023-11-07
Base Score: 5
Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:N
Severity: Medium
Base Score: 9.8
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Severity: Critical
Base Score: 9.3
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Severity: Critical