CVE-2012-10019 in Front-End Editor Plugin
Summary
by MITRE • 07/19/2025
The Front End Editor plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation via the upload.php file in versions before 2.3. This makes it possible for unauthenticated attackers to upload arbitrary files on the affected sites server which may make remote code execution possible.
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Analysis
by VulDB Data Team • 12/19/2025
The vulnerability identified as CVE-2012-10019 affects the Front End Editor plugin for WordPress, a widely used tool that allows users to edit content directly on the front end of websites. This particular flaw exists in versions prior to 2.3 and represents a critical security weakness that undermines the integrity of WordPress installations. The vulnerability stems from insufficient input validation mechanisms within the plugin's upload functionality, creating a pathway for malicious actors to bypass normal security controls and gain unauthorized access to the server environment.
The technical exploitation of this vulnerability occurs through the upload.php file which lacks proper file type validation checks. When users attempt to upload files through the front end editor interface, the system fails to adequately verify the MIME types or file extensions of uploaded content. This absence of validation creates a condition where attackers can upload malicious files such as php scripts, aspx files, or other executable code without restriction. The vulnerability is classified as a file upload vulnerability under CWE-434 which specifically addresses the improper restriction of file uploads, making it a direct threat to web application security. The flaw allows unauthenticated attackers to exploit the system without requiring valid credentials, significantly expanding the attack surface and potential impact.
The operational impact of this vulnerability is severe and multifaceted, as it provides attackers with the capability to execute arbitrary code on the compromised WordPress server. Once an attacker successfully uploads a malicious file, they can potentially gain full control over the web server, leading to data breaches, website defacement, or the installation of backdoors for persistent access. The vulnerability aligns with ATT&CK technique T1190 which describes the use of compromised web applications for code execution, and T1059 which covers the execution of malicious code through various vectors including uploaded files. The implications extend beyond immediate compromise as attackers can use the uploaded files to establish command and control channels, mine cryptocurrency, or leverage the compromised server for further attacks against other systems within the network infrastructure.
Mitigation strategies for this vulnerability must be implemented immediately through patching the Front End Editor plugin to version 2.3 or later, which includes proper file type validation mechanisms. Organizations should also implement additional security measures such as restricting file upload capabilities to specific user roles, implementing strict file extension filtering, and deploying web application firewalls to monitor and block suspicious upload attempts. The principle of least privilege should be enforced by limiting upload permissions to only authorized administrators and ensuring that uploaded files are stored in non-executable directories. Security monitoring should include regular audits of uploaded files and implementation of intrusion detection systems to identify potential exploitation attempts. Organizations should also consider implementing content delivery network protections and regular security assessments to prevent similar vulnerabilities from emerging in other plugins or themes within their WordPress installations.