The multifilesystem storage backend in Radicale before 1.1 allows remote attackers to read or write to arbitrary files via a crafted component name.

The filesystem storage backend in Radicale before 1.1 on Windows allows remote attackers to read or write to arbitrary files via a crafted path, as demonstrated by /c:/file/ignore.

Radicale before 1.1 allows remote authenticated users to bypass ownerwrite and owneronly limitations via regex metacharacters in the user name, as demonstrated by ..