CVE-2026-97267 in Prevent Files Folders Access Plugin
Summary
by MITRE • 09/30/2026
Subscriber Broken Access Control in Prevent files / folders access <= 2.6.7 versions.
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Analysis
by VulDB Data Team • 09/30/2026
The vulnerability identified as Subscriber Broken Access Control within the Prevent software suite, affecting versions up to and including 2.6.7, represents a critical failure in enforcing authorization policies for end-user subscribers. This flaw allows authenticated users who possess standard subscriber privileges to bypass intended restrictions and gain unauthorized access to files or folders that are designated as private or restricted to other user accounts or administrative roles. The core technical deficiency lies in the application's server-side logic, which fails to adequately validate whether the requesting user has explicit permission to view, modify, or delete specific resources before processing the request. Instead of relying on secure session tokens and role-based access control lists that are strictly enforced at the backend, the system appears to rely on client-side controls or insufficiently validated input parameters, allowing attackers to manipulate requests directly through HTTP methods such as GET, POST, PUT, or DELETE to target arbitrary file paths within the storage infrastructure.
From a technical perspective, this vulnerability is classified under CWE-269, which denotes Improper Privilege Control, and more specifically aligns with CWE-862, Missing Authorization. The exploitation mechanism typically involves an attacker identifying unique identifiers associated with other users' data or administrative directories and then crafting malicious API calls that omit the necessary authorization headers or substitute user session tokens to impersonate a higher-privileged entity. Because the vulnerability exists in versions 2.6.7 and earlier, it suggests a systemic lack of rigorous access control checks during this development cycle, where the principle of least privilege was not strictly applied to file system operations exposed via the web interface or API endpoints. This allows for both information disclosure and potential data tampering depending on the specific permissions granted by the flawed logic.
The operational impact of this broken access control is severe, particularly in environments handling sensitive corporate or personal data stored within the Prevent ecosystem. Attackers can exfiltrate confidential documents, leading to significant breaches of confidentiality that may violate regulatory compliance frameworks such as GDPR, HIPAA, or PCI-DSS depending on the nature of the data accessed. Beyond mere theft, if the vulnerability allows write operations due to similar authorization flaws in update endpoints, it could lead to integrity violations where critical files are altered or deleted, disrupting business continuity and potentially serving as a vector for further attacks such as defacement or injection of malicious content into shared resources. The ability to access arbitrary folders also facilitates reconnaissance, allowing attackers to map the internal structure of the storage system and identify high-value targets for subsequent exploitation attempts.
In terms of threat modeling, this vulnerability maps directly to MITRE ATT&CK technique T1078, Valid Accounts, specifically when used in conjunction with privilege escalation or lateral movement if combined with other flaws, but primarily it falls under Data Exfiltration techniques like T1530, which covers accessing data from cloud storage objects. The lack of proper access control enables the attacker to operate as a legitimate user while performing actions outside their authorized scope, effectively bypassing security monitoring tools that rely on standard authentication logs rather than deep behavioral analysis or strict authorization auditing. This makes detection challenging unless comprehensive audit logging is enabled and actively monitored for anomalous file access patterns by users who do not typically interact with those specific resources.
Mitigation strategies must prioritize immediate remediation through software updates, as the vendor has released patched versions beyond 2.6.7 that address these authorization checks. Organizations running affected versions should upgrade to the latest stable release immediately to ensure that server-side validation logic correctly enforces role-based access controls for all file and folder operations. In cases where upgrading is not immediately feasible due to compatibility constraints, temporary mitigations include implementing a Web Application Firewall (WAF) rule set designed to detect and block requests containing suspicious path traversal sequences or unauthorized API calls targeting sensitive directories. Additionally, administrators should enforce strict network segmentation to limit access to the Prevent application interface from untrusted networks and enable detailed audit logging to monitor for unusual file access activities that deviate from normal user behavior patterns. Regular security assessments and penetration testing focused on authorization flaws are also recommended to identify any residual risks or similar misconfigurations in related modules of the software suite.