GHSA-VX2F-6M6H-9FRF Bugsink: Issue event views can show an event from another project if its UUID is known

Description Bugsink issue event pages accept a direct event identifier from the URL and, in affected versions, look up that event without also requiring it to belong to the issue in the URL. This is a project-boundary authorization issue: a logged-in user with access to one project can view anoth...