| Class | EditBugNominationStatus | Undocumented |
| Class | EditBugTask | Permission checker for editing objects linked to a bug. |
| Class | DeleteBugTask | No class docstring; 1/1 methods documented |
| Class | AdminDeleteBugTask | Launchpad admins can also delete bug tasks. |
| Class | PublicToAllOrPrivateToExplicitSubscribersForBugTask | No class docstring; 1/2 methods documented |
| Class | AppendBug | Security adapter for appending to bugs. |
| Class | EditBug | Security adapter for editing bugs. |
| Class | PublicToAllOrPrivateToExplicitSubscribersForBug | No class docstring; 2/2 methods documented |
| Class | ViewBugAttachment | Security adapter for viewing a bug attachment. |
| Class | EditBugAttachment | Security adapter for editing a bug attachment. |
| Class | ViewBugActivity | Security adapter for viewing a bug activity record. |
| Class | ViewBugSubscription | Undocumented |
| Class | EditBugSubscription | No class docstring; 1/1 methods documented |
| Class | ViewBugMessage | Undocumented |
| Class | ViewBugTracker | Anyone can view a bug tracker. |
| Class | EditBugTracker | No class docstring; 1/1 methods documented |
| Class | AdminBugTracker | Undocumented |
| Class | AdminBugWatch | Undocumented |
| Class | EditStructuralSubscription | Edit permissions for IStructuralSubscription. |
| Class | EditBugSubscriptionFilter | Bug subscription filters may only be modified by the subscriber. |