Foreman before 1.10.3 and 1.11.0 before 1.11.0-RC2 allow remote authenticated users to read, modify, or delete private bookmarks by leveraging the (1) edit_bookmarks or (2) destroy_bookmarks permission.
https://access.redhat.com/errata/RHBA-2016:1500
http://www.openwall.com/lists/oss-security/2016/03/31/2