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FINDING · YK-0142SAMPLE
CRITICALCVSS 9.1CWE-639
Broken object-level authorization on invoice export
GET /api/v2/invoices/{id}/export
Any authenticated user can download other tenants' invoices by changing the id. Ids are sequential — the whole customer base can be enumerated.
— Reproduction1. Authenticate as tenant A2. Request invoice 48213 (tenant B)3. Server returns tenant B's PDF — 200 OK
— FixEnforce server-side ownership checks on every object access.
Open · reported day 2 of 10 · retest pending