CVE-2026-19734: IDOR in Prospero Flow CRM allows cross-tenant product disclosure and hijacking

Severity: high (CVSS 8.6 v4.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-08-13 · updated 2026-10-23
Weakness: CWE-639

Description

Missing Authorization and Authorization Bypass Through User-Controlled Key in the product management component in Roskus Prospero Flow CRM before 5.4.7 allows authenticated users of any company to read the full sensitive data (price, cost, stock, SKU, and barcode) of another company's product and to hijack that product by reassigning its company_id, via the product's numeric identifier, because `ProductUpdateController` did not extend `MainController` and therefore required no authentication check on the read endpoint, and `ProductRepository::save()` retrieved the record via `Product::find($data['id'])` without constraining the query to the authenticated user's company before overwriting its company_id.

Affected products

Roskus Prospero Flow CRM: before 5.4.7 — fixed in 5.4.7

How to fix

Upgrade to a fixed version: Roskus Prospero Flow CRM 5.4.7. Check the vendor advisory for mitigations.

References

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