CVE-2022-47766 in PopojiCMS
Summary
by MITRE • 01/19/2023
PopojiCMS v2.0.1 backend plugin function has a file upload vulnerability.
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Analysis
by VulDB Data Team • 04/04/2025
The vulnerability identified as CVE-2022-47766 affects PopojiCMS version 2.0.1 and represents a critical file upload vulnerability within the backend plugin functionality. This issue stems from insufficient input validation and access control mechanisms that allow unauthorized users to upload malicious files to the server. The vulnerability exists specifically within the plugin management system where file upload operations are processed without proper sanitization of file names, types, or content. Attackers can exploit this weakness to execute arbitrary code on the target server, potentially leading to complete system compromise and unauthorized access to sensitive data.
The technical flaw manifests through a lack of proper file type validation and directory traversal controls within the upload handler. When users attempt to upload files through the backend plugin interface, the system fails to adequately verify the file extension, MIME type, or file content against a whitelist of acceptable formats. This weakness creates an opportunity for attackers to upload web shells, malicious scripts, or other harmful payloads that can be executed within the context of the web server. The vulnerability aligns with CWE-434 which categorizes insecure file upload vulnerabilities and represents a classic example of insufficient input validation that allows malicious file execution.
Operationally, this vulnerability presents significant risks to organizations using PopojiCMS v2.0.1 as it provides a direct path to remote code execution and potential system takeover. An attacker who gains access to the backend plugin functionality can upload malicious files that persist on the server and execute commands with the privileges of the web application. This could lead to data breaches, service disruption, and lateral movement within the network. The impact extends beyond immediate exploitation as compromised systems often serve as launch points for further attacks, making this vulnerability particularly dangerous in enterprise environments where multiple systems may be interconnected.
Mitigation strategies for CVE-2022-47766 should focus on immediate patching of the affected PopojiCMS version to the latest available release that addresses the file upload validation issues. Organizations must implement strict file type filtering mechanisms that reject executable files and validate all uploaded content against a comprehensive whitelist of allowed extensions. Network segmentation and access control measures should be enforced to limit backend access to authorized personnel only. Additionally, implementing web application firewalls and content inspection systems can help detect and block malicious upload attempts. The remediation process should include thorough security testing of all file upload functionalities and regular vulnerability assessments to ensure that similar issues do not arise in other components of the application. This vulnerability demonstrates the importance of maintaining up-to-date software and implementing robust security controls around file handling operations, which aligns with ATT&CK technique T1190 for exploiting vulnerabilities in web applications.