CVE-2026-19433 Authorization Bypass Through User-Controlled Key in Prospero Flow CRM contact save and vCard export
Authenticated users can bypass authorization to overwrite and download other companies' contact data via numeric identifiers in Prospero Flow CRM.
- 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-2026-19433?
CVE-2026-19433 is a high-severity missing authorization vulnerability in Roskus Prospero Flow CRM, published on 10 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 contact management component in Roskus Prospero Flow CRM before 5.4.8 allows authenticated users of any company to blindly overwrite the contact data of another company and to download that contact's personal data as a vCard via the contact's numeric identifier, because the save and export operations retrieve the record without constraining the query to the authenticated user's company.
Weakness: CWE-639
Which versions are affected by CVE-2026-19433?
How do I fix CVE-2026-19433?
No fix has been published for CVE-2026-19433 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-2026-19433 being exploited?
There is no known exploitation of CVE-2026-19433 in the wild and no public exploit code.
Sources
Also known as GHSA-8666-8wpq-7c9q.