A critical authorization flaw in AppFlowy-Cloud allows authenticated users to access, modify, or delete sensitive data across different workspaces, posing a significant risk of unauthorized data exposure.

The application fails to perform proper authorization checks when accessing collaboration objects, specifically neglecting to verify if the requested object belongs to the user's workspace. An authenticated attacker can manipulate the workspace association to perform unauthorized read, write, or delete operations on objects belonging to other users.

The ability for an attacker to access cross-workspace data presents a severe risk of data breach, potentially exposing proprietary information or sensitive customer data. Because the vulnerability allows for the modification or deletion of records, it poses a direct threat to data integrity and business continuity. With a CVSS score of 7.5, this high-severity flaw requires immediate attention to prevent unauthorized access to internal systems.

Immediate Action: Organizations should restrict external access to the AppFlowy-Cloud API and contact the vendor for the latest security patches to address the missing authorization checks.

Proactive Monitoring: Security teams should monitor access logs for suspicious API requests where the workspace identifier does not match the authenticated user's assigned scope.

Compensating Controls: Implement a Web Application Firewall (WAF) with rules designed to validate request parameters and block anomalous API traffic that attempts to reference unauthorized resource identifiers.

Public Exploit Available: No (Exploit_available: unknown)

Given the potential for unauthorized data access and manipulation, this vulnerability must be treated as a high priority. Administrators should apply official vendor patches as soon as they become available and review internal access control logs for any signs of cross-workspace interaction attempts.