February 1, 2023
Django 4.1.6 fixes a security issue with severity “moderate” and a bug in 4.1.5.
The parsed values of
Accept-Language headers are cached in order to avoid
repetitive parsing. This leads to a potential denial-of-service vector via
excessive memory usage if large header values are sent.
In order to avoid this vulnerability, the
Accept-Language header is now
parsed up to a maximum length.
Fixed a bug in Django 4.1 that caused a crash of model validation on
UniqueConstraint with ordered expressions (#34291).