Understanding the FoxyPress Arbitrary File Upload Vulnerability
A critical security flaw has been identified in the FoxyPress plugin for WordPress, labeled as CVE-2012-10020. This vulnerability allows attackers to upload malicious files onto websites using the affected plugin, potentially leading to a complete compromise of the site. It’s a serious issue because it doesn’t require an attacker to be logged in, making it easier to exploit.
CVE Details
This vulnerability affects the FoxyPress plugin, a tool for integrating payment gateways into WordPress. The core problem lies in a file named uploadify.php, which is used for handling file uploads. Unfortunately, this file lacks proper checks to ensure that only safe and intended file types are uploaded. As a result, an attacker can bypass these missing validations and upload dangerous files, such as web shells, that can then be executed on the server.
- Product: FoxyPress plugin for WordPress
- Published: July 22, 2025
- Severity: Critical
- Status: Analyzed
Affected Products
The FoxyPress plugin for WordPress is vulnerable in all versions up to, and including, 0.4.2.1. If you are running any version within this range, your website is at high risk.
Current Status
The vulnerability has been analyzed and confirmed. Given the nature of this flaw, which has been known for some time (CVE from 2012, but recent analysis date), it’s crucial for website administrators to address it promptly. The last modification date for this CVE was December 16, 2025, indicating ongoing attention to this critical issue.
Severity Level
This arbitrary file upload vulnerability is rated with a Critical severity level, boasting a CVSS score of 9.8 out of 10. This extremely high score reflects the ease with which the vulnerability can be exploited and the severe impact it can have. Unauthenticated attackers can upload arbitrary files, which means they don’t need any special permissions or accounts to wreak havoc. Once a malicious file is uploaded, it can be executed remotely, granting the attacker significant control over your website and potentially the entire server.
Possible Solutions
If you are using the FoxyPress plugin on your WordPress site, immediate action is required:
- Update FoxyPress: The most effective solution is to update your FoxyPress plugin to a version that has patched this vulnerability. It is highly probable that later versions have addressed this specific flaw, especially given the age of the CVE and the existence of related changesets (e.g., in the WordPress plugin repository). Always ensure your plugins are updated to their latest, stable releases.
- Deactivate or Remove: If an updated version of FoxyPress is not available, or if the plugin is no longer actively maintained by its developers, it is strongly recommended to deactivate and remove it from your WordPress installation. Continuing to run an unpatched and unsupported plugin with such a critical vulnerability leaves your site exposed to severe risks.
- Implement Web Application Firewall (WAF): A WAF can provide an additional layer of security by detecting and blocking malicious file uploads and remote code execution attempts, even if your plugin remains vulnerable. This acts as an important defense mechanism.
- Regular Backups: Always maintain regular, tested backups of your website. In the event of a successful attack, a recent backup can help restore your site quickly and minimize downtime.
References
https://packetstormsecurity.com/files/113576/
https://plugins.trac.wordpress.org/changeset/555071
https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/unix/webapp/wp_foxypress_upload.rb
https://web.archive.org/web/20210120060045/https%3A//www.securityfocus.com/bid/53805/info
https://www.wordfence.com/threat-intel/vulnerabilities/id/8fbc88da-8944-433c-b94d-9604ffe13d8a?source=cve
