Open redirect in Django Grappelli - CVE-2021-46898

Detailed vulnerability description

The vulnerability allows a remote attacker to redirect victims to arbitrary URL.

The vulnerability exists due to improper sanitization of user-supplied data in views/switch.py when handling URL that starts with "//" characters instead of protocol name. A remote attacker can create a link that leads to a trusted website, however, when clicked, redirects the victim to arbitrary domain.

Successful exploitation of this vulnerability may allow a remote attacker to perform a phishing attack and steal potentially sensitive information.

How to mitigate CVE-2021-46898

Sources

• https://github.com/sehmaschine/django-grappelli/commit/4ca94bcda0fa2720594506853d85e00c8212968f
• https://github.com/sehmaschine/django-grappelli/pull/976
• https://github.com/sehmaschine/django-grappelli/compare/2.15.1...2.15.2
• https://github.com/sehmaschine/django-grappelli/issues/975