CVE-2026-59240 in Prospero Flow CRM
Summary
by MITRE • 07/28/2026
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($id)` and deletes it without validating `user_id` or `company_id` ownership, unlike the sibling `SetNotificationReadAjaxController`, which correctly scopes lookups by `Auth::id()`. Because notification identifiers are sequential, an attacker can iterate over IDs to systematically delete notifications belonging to any user, denying them visibility of ticket alerts, task assignments, and other system events.
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Analysis
by VulDB Data Team • 07/28/2026
The identified vulnerability represents a critical insecure direct object reference flaw that fundamentally undermines the application's authorization controls. This weakness exists within the DeleteNotificationController::delete() method at the endpoint GET /notification/delete/{id} where the system fails to implement proper access controls when processing deletion requests. The vulnerability stems from the controller's implementation pattern which retrieves notifications using Notification::findOrFail($id) without verifying that the authenticated user has legitimate ownership or permission rights over the target notification record. Unlike the properly implemented SetNotificationReadAjaxController that correctly scopes lookups by Auth::id(), this delete endpoint operates without any ownership validation mechanism, creating a systematic bypass of the application's security boundaries.
The technical exploitation of this vulnerability occurs through predictable sequential notification identifiers that allow attackers to systematically iterate through notification IDs and delete records belonging to other users. This enumeration capability enables adversaries to craft automated scripts that cycle through ID ranges, effectively granting unauthorized deletion privileges across all notification records within the system. The flaw specifically affects the application's authorization model by allowing any authenticated user to access and manipulate notification data that should be restricted based on user identity or company affiliation. The absence of user_id or company_id validation during the deletion process means that the system cannot distinguish between legitimate deletion requests from authorized users and malicious attempts by unauthorized parties.
The operational impact of this vulnerability extends beyond simple data manipulation to create significant service disruption and potential information leakage scenarios. Attackers can systematically remove notification records that contain important ticket alerts, task assignments, and system events that are crucial for user workflow management and operational visibility. This capability directly undermines the integrity of the notification system by enabling denial-of-service conditions where legitimate users lose access to critical system communications. The vulnerability also creates potential privacy concerns as it allows unauthorized access to other users' notification content, potentially exposing sensitive information about system activities, user roles, or business processes that are typically restricted to specific user groups or organizations.
This vulnerability maps directly to CWE-285 (Improper Authorization) and represents a classic example of insufficient authorization checks in web applications. The flaw demonstrates poor secure coding practices where the application fails to implement proper access control validation at the controller level, creating an authorization bypass that violates fundamental security principles. From an attack perspective, this vulnerability aligns with ATT&CK technique T1566 (Phishing) and T1485 (Data Destruction) when attackers leverage the ability to delete notifications as part of broader compromise strategies. The sequential nature of notification IDs makes this vulnerability particularly dangerous as it enables automated exploitation without requiring sophisticated reconnaissance or privilege escalation techniques.
The recommended mitigation strategy involves implementing proper authorization validation within the DeleteNotificationController::delete() method by adding ownership checks that verify the authenticated user's relationship to the target notification record. This requires modifying the controller to incorporate user_id and company_id validation similar to the existing SetNotificationReadAjaxController implementation, ensuring that only notifications belonging to the authenticated user or authorized personnel can be deleted. Additional protective measures include implementing rate limiting on deletion requests, adding audit logging for all deletion operations, and introducing randomization or obfuscation of notification identifiers to prevent enumeration attacks. The system should also implement proper input validation and sanitization to ensure that all deletion requests are properly authenticated before any database modification occurs, establishing a robust authorization framework that prevents unauthorized access to user-specific notification data while maintaining system integrity and operational continuity.