CVE-2025-65784 identifies an insecure permissions vulnerability in Hubert Imoveis e Administracao Ltda Hub version 2.0 1.27.3. The vulnerability allows attackers who have authenticated with low-level privileges to bypass intended access controls and retrieve information belonging to other users by crafting specific API requests. This indicates a failure in the authorization logic within the API endpoints, where user identity or privilege checks are insufficient or improperly implemented. The lack of a CVSS score suggests this is a newly published vulnerability with limited public data. No patches or known exploits are currently documented, but the flaw inherently risks unauthorized disclosure of potentially sensitive user data. The vulnerability affects confidentiality primarily, with possible implications for privacy compliance. Since exploitation requires authentication but not elevated privileges, any user with basic access could leverage this flaw to escalate their data access rights. The affected software appears to be a property management or real estate platform, which may store personal and financial information of clients and users. The vulnerability's presence in version 1.27.3 implies that earlier or later versions might be unaffected or require separate assessment. The lack of patch links indicates that remediation may require vendor intervention or configuration changes. This vulnerability highlights the importance of robust API authorization mechanisms and thorough security testing in multi-tenant applications.

For European organizations, especially those in real estate, property management, or related sectors using Hubert Imoveis e Administracao Ltda Hub, this vulnerability could lead to unauthorized disclosure of client and user data, violating GDPR and other privacy regulations. The exposure of personal information can result in reputational damage, regulatory fines, and loss of customer trust. Since the flaw allows low-privilege authenticated users to access other users' information, insider threats or compromised accounts could be leveraged to harvest sensitive data at scale. The impact on confidentiality is significant, while integrity and availability are less directly affected. Organizations may face legal and compliance challenges if personal data is leaked. Additionally, attackers could use the exposed information for further targeted attacks such as phishing or social engineering. The absence of known exploits suggests a window of opportunity for defenders to act before widespread abuse occurs. However, the ease of exploitation by any authenticated user increases the risk profile. European entities must prioritize identifying affected systems and implementing controls to prevent unauthorized data access.

Organizations should immediately audit API permission settings and access control policies within Hubert Imoveis e Administracao Ltda Hub installations. Implement strict role-based access control (RBAC) to ensure users can only access their own data. Conduct thorough testing of API endpoints to verify proper authorization checks are enforced. If vendor patches become available, apply them promptly. In the absence of patches, consider deploying web application firewalls (WAFs) with custom rules to detect and block suspicious API requests that attempt to access other users' data. Monitor logs for unusual access patterns indicative of exploitation attempts. Enforce strong authentication mechanisms and consider multi-factor authentication to reduce the risk of compromised accounts. Educate users about the risks of credential sharing and phishing. Regularly review and update security policies to align with GDPR requirements for data protection. Engage with the vendor for updates and guidance on secure configurations. Finally, segment networks and limit access to the application backend to reduce exposure.