Pass-6 findings — both MEDIUM cross-tenant FK injection.
- interests.service: createInterest/updateInterest/linkBerth accepted
clientId/berthId/yachtId from the request body without verifying the
referenced row belongs to the caller's port. getInterestById joins
clients/berths/yachtTags on these FKs without a port filter, so a
port-A caller could splice a foreign-port id and surface that
tenant's clientName, mooringNumber, or yacht ownership on read.
New assertInterestFksInPort helper guards all three surfaces.
- clients.service.createRelationship: accepted clientBId from the
body without a port check; the relationship list endpoint joins
clients without filtering by port, so the foreign client's name
+ email would render in the relationships tab. Now verifies
clientBId belongs to portId and rejects self-relationships.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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