CVE-2026-77780: Roskus Prospero Flow CRM

Medium severity, CVSS 5.3. EPSS: 0.4% chance of exploitation in the next 30 days.

Authorization Bypass Through User-Controlled Key in the transaction save endpoint in Roskus Prospero Flow CRM 4.9.1 through 5.14.0 allows a user with transaction and accounting creation permissions to disclose another company's bank account name, bank name and card last four digits via a bank_account_id or bank_card_id belonging to that company in POST /transaction/save, which is persisted and rendered without any company ownership check.

Affected products

• Roskus Prospero Flow CRM: from 4.9.1, before 5.14.2 (fixed in 5.14.2)

Published 2026-08-21. Last modified 2026-09-01.