Improper access control in the CSV import wizard (see GHSA-23w9-4pg3-xwm3)

PKSA-rfnv-mh54-2pc9

Affected package: contao/contao

Affected version: >=5.0.0,<5.3.50|>=5.4.0,<5.7.12

Reported by:
FriendsOfPHP/security-advisories