CVE-2026-59240: Roskus Prospero Flow CRM IDOR in DeleteNotificationController

CVE-2026-59240 · Severity: info · CVSS 6.9 · Published 2026-07-27

Prospero Flow CRM is a customer relationship management platform used to manage business tasks and communications. A security flaw allows any logged-in user to delete notifications belonging to other users or companies by guessing sequential ID numbers. This could result in staff missing critical ticket alerts, task assignments, or system events, potentially disrupting business operations and internal communications.

Technologies: Roskus Prospero Flow CRM. Vendors: Roskus.

Quick answers

Is CVE-2026-59240 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-59240 being exploited in the wild.
How severe is CVE-2026-59240?
Informational severity, with a CVSS score of 6.9, published 27 July 2026.
Which products and versions are affected?
Roskus Prospero Flow CRM 1.0.0 to 5.5.0.
Is there a fix for CVE-2026-59240?
A patch was published on 2026-06-26: Fix included in release v5.5.3 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-59240 attacked?
It is attacked over the network, in a network appliance.
Am I affected by CVE-2026-59240?
Check whether you run Roskus Prospero Flow CRM at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

An Insecure Direct Object Reference (IDOR) exists in the `DeleteNotificationController::delete()` method at the `GET /notification/delete/{id}` endpoint. The root cause is the use of `Notification::findOrFail($id)` without verifying that the `user_id` or `company_id` associated with the notification matches the authenticated user's session. Because notification IDs are sequential, an authenticated attacker can perform a horizontal privilege escalation to systematically delete notifications across the entire system. This vulnerability was addressed in version 5.5.1 by scoping the database lookup to the authenticated user's ID.

Affected products

  • Roskus Prospero Flow CRM 1.0.0 to 5.5.0

Timeline

  • 2026-06-26: patched: Fix included in release v5.5.3
  • 2026-07-27: disclosed: CVE published by Secur0 CNA

References

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