The RSS Reader component in Cybozu Garoon 3.x through 3.7.5 and 4.x through 4.0.3 allows remote authenticated users to execute arbitrary PHP code via unspecified vectors, aka CyVDB-866.
https://support.cybozu.com/ja-jp/article/8810
http://jvndb.jvn.jp/jvndb/JVNDB-2015-000151