CVE-2026-111956 in WholesaleX Plugin
Summary
by MITRE • 10/22/2026
The WholesaleX WordPress plugin before 3.0.9 does not protect or remove the user-import file it keeps in a publicly accessible location under a predictable name, allowing unauthenticated users to download the most recently imported user data, including any account passwords and customer contact and address details it contains.
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Analysis
by VulDB Data Team • 10/22/2026
The vulnerability identified in WholesaleX WordPress plugin versions prior to 3.0.9 represents a critical failure in secure file handling practices within content management systems. This flaw is categorized under CWE-267, which describes Privilege Confusion: Misinterpreted Actions, specifically manifesting as insecure default permissions or public accessibility of sensitive files. The core technical issue stems from the plugin's user import functionality, where uploaded CSV or Excel files containing bulk user data are stored on the server without adequate access controls. Instead of being placed in a restricted directory with restrictive file system permissions, these temporary or cached import files are retained in a publicly accessible web root location. Furthermore, the storage mechanism utilizes a predictable naming convention for these files rather than generating random, unguessable filenames. This combination of public accessibility and predictability creates an exploitable condition where any individual on the internet can locate and retrieve these documents without needing to authenticate or possess valid credentials against the WordPress installation.
From an operational perspective, this vulnerability leads to severe data exposure consequences that extend far beyond simple information leakage. The imported files typically contain sensitive personally identifiable information (PII) such as customer names, email addresses, physical shipping and billing addresses, and phone numbers. More critically, if passwords were included in the import process or stored alongside user accounts during synchronization, these credentials are also exposed. For organizations relying on this plugin for wholesale operations, the exposure of customer contact details can lead to targeted phishing campaigns, spamming, and reputational damage. The disclosure of password hashes or plaintext passwords poses a direct risk to account security across multiple platforms if users practice credential reuse. Attackers can leverage this data for social engineering attacks, identity theft, or further reconnaissance against the organization's infrastructure by mapping out user roles and access levels based on the imported administrative or customer accounts.
The attack vector associated with this vulnerability is classified under MITRE ATT&CK technique T1005, which refers to Data from Local System Retrieval. Because no authentication is required, an unauthenticated attacker can simply construct a URL using the predictable filename pattern and request the file directly through standard HTTP GET requests. This simplicity makes automated scanning tools highly effective at detecting this vulnerability across large numbers of WordPress installations. The persistence of these files suggests that the plugin fails to implement proper cleanup routines after the import process is completed, or it retains them for debugging purposes without restricting access. This lack of lifecycle management for sensitive temporary data highlights a broader architectural weakness in how third-party plugins handle user-generated content and system resources within shared hosting environments typical of WordPress deployments.
Mitigation strategies must address both immediate remediation and long-term secure coding practices. The primary and most effective mitigation is to upgrade the WholesaleX plugin to version 3.0.9 or later, where this specific file handling flaw has been resolved by implementing proper access controls and secure temporary storage mechanisms. For organizations unable to update immediately due to compatibility concerns with other plugins, a manual intervention is required. Administrators should inspect the WordPress upload directory for any residual CSV or Excel files that were used in recent user imports and delete them manually if they remain accessible via web URLs. Additionally, server-level configurations such as .htaccess rules can be employed to restrict direct access to specific file types like .csv or .xlsx within certain directories, although this is a compensatory control rather than a fix for the underlying application logic. Developers should adhere to secure coding standards by ensuring that all temporary files are stored outside the web root whenever possible, and if they must reside in accessible locations, they must be protected with strict file permissions (e.g., 600 or 700) and randomized filenames generated using cryptographically secure random number generators. Regular security audits of plugin code should also verify that sensitive data is not left behind after processing operations are complete.