Vulnerability · Published Aug 10, 2026 · Assigned by Secur0
CVE-2026-19433Authorization Bypass Through User-Controlled Key in Prospero Flow CRM contact save and vCard export
High 8.6
In plain English
A high-severity authorization bypass via user-controlled key in Prospero Flow CRM from Roskus. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 38% of all known vulnerabilities).
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Roskus | Prospero Flow CRM | 0 – before 5.4.8 |
Weakness: CWE-639 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
References
- https://github.com/Roskus/prospero-flow-crm/commit/f16b4af2027b17bef7c604c92dbd86cf38082398 patch
- https://github.com/Roskus/prospero-flow-crm/releases/tag/v5.5.3 release-notes
- https://secur0.com/en/cna/cve-list/cve-2026-19433-idor-in-prospero-flow-crm-contact-save-and-vcard-export technical-description