Verify that an endpoint checks ownership, not just authentication. Use on any handler that reads or mutates user data.
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Verify that an endpoint checks ownership, not just authentication. Use on any handler that reads or mutates user data.
when_to_use
new/changed endpoint, "get user X's data", a mutation, an admin action
targets
["*"]
Authz Check
The most common security hole: the code checks you're logged IN, but not that you OWN the thing.
For every resource access: does it verify the current user is allowed THIS specific record? WHERE id = ? AND owner_id = current_user - not just WHERE id = ?.
IDOR test: swap the ID in the request to another user's. Does it leak/allow?
Admin/privileged actions: is the role checked server-side, every time, not just hidden in the UI?
Default deny: new endpoints should require explicit authorization, not be open by oversight.
Output each handler that authenticates but doesn't authorize, with the missing check.
