CVE-2026-77780 Missing authorization in Prospero Flow CRM
Attackers with transaction permissions can view other companies' banking details by manipulating IDs in the transaction save endpoint.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-77780?
CVE-2026-77780 is a medium-severity missing authorization vulnerability in Roskus Prospero Flow CRM, published on 21 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
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.
Weakness: CWE-639
Which versions are affected by CVE-2026-77780?
How do I fix CVE-2026-77780?
No fix has been published for CVE-2026-77780 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-77780 being exploited?
There is no known exploitation of CVE-2026-77780 in the wild and no public exploit code.
Sources
Also known as GHSA-5v96-p23j-5mwq.