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.
https://github.com/Unrud/Radicale/commit/b4b3d51f33c7623d312f289252dd7bbb8f58bbe6
https://github.com/Kozea/Radicale/pull/343
http://www.securityfocus.com/bid/80255
http://www.openwall.com/lists/oss-security/2016/01/07/7
http://www.openwall.com/lists/oss-security/2016/01/06/7