Red Hat Keycloak before version 2.4.0 did not correctly check permissions when handling service account user deletion requests sent to the rest server. An attacker with service account authentication could use this flaw to bypass normal permissions and delete users in a separate realm.
The Discussions sub module in the Open Atrium module 7.x-2.x before 7.x-2.26 for Drupal allows remote authenticated users with "access content" permissions to modify arbitrary nodes by leveraging improper access checks on unspecified ajax callbacks.
The Upload module in Drupal 6.x before 6.4 allows remote authenticated users to edit nodes, delete files, and download unauthorized attachments via unspecified vectors.