CVE-2022-47599 in Bit File Manager Plugin
Summary
by MITRE • 12/20/2023
Deserialization of Untrusted Data vulnerability in File Manager by Bit Form Team File Manager – 100% Free & Open Source File Manager Plugin for WordPress | Bit File Manager.This issue affects File Manager – 100% Free & Open Source File Manager Plugin for WordPress | Bit File Manager: from n/a through 5.2.7.
VulDB is the best source for vulnerability data and more expert information about this specific topic.
Analysis
by VulDB Data Team • 06/04/2026
This vulnerability represents a critical deserialization flaw in the Bit Form Team File Manager WordPress plugin that exposes systems to remote code execution risks. The issue stems from the plugin's improper handling of untrusted data during the deserialization process, creating a pathway for attackers to execute arbitrary code on vulnerable systems. The vulnerability affects all versions from the initial release through version 5.2.7, indicating a long-standing security gap that has remained unaddressed for an extended period. This type of vulnerability falls under CWE-502 which specifically addresses deserialization of untrusted data, making it a well-documented and dangerous class of security flaws. The ATT&CK framework categorizes this under T1203 - Exploitation for Client Execution, as it enables attackers to execute malicious code on target systems through the vulnerable plugin interface. The deserialization vulnerability occurs when the plugin processes user-supplied data without proper validation or sanitization, allowing attackers to craft malicious serialized objects that execute unintended operations when deserialized.
The technical impact of this vulnerability extends beyond simple code execution to encompass complete system compromise and data exfiltration capabilities. Attackers can leverage this flaw to upload malicious files, modify existing system components, and establish persistent access points within the WordPress environment. The vulnerability's exploitation requires minimal privileges and can be achieved through standard web-based attack vectors, making it particularly dangerous for widespread deployment. The affected plugin's functionality as a file manager creates additional attack surface where malicious serialized data could be introduced through file upload operations or configuration parameters. The lack of input validation during the deserialization process creates a direct pathway for attackers to inject malicious payloads that can execute with the privileges of the web server process, potentially leading to full system compromise.
Organizations running vulnerable versions of this WordPress plugin face significant operational risks including unauthorized data access, system infiltration, and potential regulatory compliance violations. The vulnerability's persistence across multiple versions suggests inadequate security testing and code review processes within the plugin development lifecycle, indicating potential gaps in the software supply chain security. Security teams must prioritize immediate remediation efforts to prevent exploitation, as the vulnerability's impact can extend beyond the immediate plugin to affect entire WordPress installations and underlying infrastructure. The attack surface increases when the plugin is used in conjunction with other vulnerable components, creating cascading security risks that can compromise entire web applications. The vulnerability's exploitation can result in data breaches, service disruption, and reputational damage that may require extensive forensic analysis and system recovery operations.
Mitigation strategies should focus on immediate version updates to the latest secure release, as well as implementing additional security controls such as web application firewalls and input validation layers. Organizations should conduct comprehensive vulnerability assessments to identify all instances of the affected plugin across their infrastructure, particularly in shared hosting environments where multiple sites may be compromised. Network segmentation and privilege separation can help limit the impact if exploitation occurs, while regular security monitoring should be implemented to detect potential exploitation attempts. The implementation of proper code review processes and security testing protocols can prevent similar vulnerabilities from emerging in future plugin versions. Additionally, maintaining up-to-date security patches for the WordPress core and all plugins ensures that organizations have comprehensive protection against known vulnerabilities. The incident underscores the importance of continuous security monitoring and the necessity of secure coding practices, particularly in open source projects where community contributions may introduce security gaps without proper oversight and validation.