The EditCSVAction function in cgi/actions.py in Roundup 1.2 before 1.2.1, 1.4 through 1.4.6, and possibly other versions does not properly check permissions, which allows remote authenticated users with edit or create privileges for a class to modify arbitrary items within that class, as demonstrated by editing all queries, modifying settings, and adding roles to users.
https://www.redhat.com/archives/fedora-package-announce/2009-March/msg00439.html
https://www.redhat.com/archives/fedora-package-announce/2009-March/msg00429.html
https://bugzilla.redhat.com/show_bug.cgi?id=489355
http://www.securityfocus.com/bid/34059
http://www.debian.org/security/2009/dsa-1754
http://secunia.com/advisories/34192