High advisory for Munshi (by Petpooja)

Advisory overview

Munshi (by Petpooja) before 2026-07-28 contained a broken object level authorization vulnerability that allows authenticated sub-users to delete invoices belonging to the tenant owner by exploiting the DELETE /api/invoice/{invoice_id} and POST /api/invoices/bulk-delete endpoints, which only verify tenant membership without enforcing object-level ownership or permission checks. Attackers can invoke single or bulk deletion requests with arbitrary invoice identifiers to delete invoices they do not own, resulting in unauthorized data loss.

Related references

• https://medium.com/@TheWildEye/bola-in-munshi-sub-users-could-delete-the-tenant-owners-invoices-008f4331c339
• https://www.petpooja.com/
• https://www.vulncheck.com/advisories/munshi-broken-object-level-authorization-via-invoice-deletion-api