CVE-2026-59240

MEDIUM CVSS 4.0: 6.9 EPSS 0.29%
Updated Jul 28, 2026
Roskus
Parameter Value
CVSS 6.9 (MEDIUM)
Affected Versions 1.0.0 — 5.5.1
Fixed In 5.5.1
Type CWE-639 (Authorization Bypass)
Vendor Roskus
Public PoC No

The vulnerability involves an Insecure Direct Object Reference (IDOR) in the `DeleteNotificationController::delete()` method at endpoint `GET /notification/delete/{id}`. The flaw allows any authenticated user, regardless of company or permissions, to delete notifications belonging to any other user in the system. The controller retrieves the target record with `Notification::findOrFail($id)` and deletes it without validating `user_id` or `company_id` ownership, unlike the sibling `SetNotificationReadAjaxController`, which correctly scopes lookups by `Auth::id()`.

Because notification identifiers are sequential, an attacker can iterate over IDs to systematically delete notifications belonging to any user, denying them visibility of ticket alerts, task assignments, and other system events.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
None
No data leak
Integrity
Low
Partial data modification
Availability
None
No disruption

CVSS Vector v4.0

Weakness Type (CWE)

Vulnerable Products 1

Configuration From (including) Up to (excluding)
Roskus Prospero_Flow_Crm
cpe:2.3:a:roskus:prospero_flow_crm:*:*:*:*:*:*:*:*
1.0.0 5.5.1