Understanding the Critical Risk
The Work The Flow File Upload plugin, a tool designed for WordPress websites, has a serious security flaw. This vulnerability, identified as CVE-2015-10138, allows attackers to upload any type of file they want onto your website. This is possible because the plugin, specifically in its jQuery-File-Upload-9.5.0 server and test files, lacks proper checks for file types when uploads occur. If exploited, an attacker could potentially upload malicious code, leading to complete control over your website, also known as remote code execution.
CVE Details
Product: Work The Flow File Upload plugin for WordPress
CVE ID: CVE-2015-10138
Published: July 19, 2025
Severity: Critical (CVSS Score: 9.8)
Status: Analyzed
Affected Products
The vulnerability impacts the Work The Flow File Upload plugin for WordPress, specifically in versions up to, and including, 2.5.2. If you are using this plugin within this version range, your website is at risk.
Current Status
This vulnerability has been analyzed and publicly disclosed, indicating that its details are known within the cybersecurity community. Due to its critical severity, awareness and prompt action are essential for website administrators.
Severity Level
With a CVSS score of 9.8, this vulnerability is rated as Critical. This high severity rating means that the flaw is easily exploitable by unauthenticated attackers and can lead to severe consequences, including full compromise of the affected website, data theft, and defacement.
Possible Solutions
Given the critical nature of this arbitrary file upload vulnerability, immediate action is strongly recommended:
- Update the Plugin: The most crucial step is to update your Work The Flow File Upload plugin to the latest available version. Developers typically release patches to address such severe vulnerabilities. Ensure you are running a version that has fixed the missing file type validation issue.
- Remove or Disable: If an updated version is not immediately available or if you no longer need the functionality of the plugin, consider disabling or completely removing the Work The Flow File Upload plugin from your WordPress installation to eliminate the risk.
- Regular Backups: Always maintain regular backups of your WordPress site. In the event of a compromise, having a recent backup can help you restore your site quickly.
- Web Application Firewall (WAF): Implement a WAF as an additional layer of security. A WAF can help detect and block malicious upload attempts even before they reach your server.
References
https://packetstormsecurity.com/files/131294/
https://packetstormsecurity.com/files/131512/
https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=1127456%40work-the-flow-file-upload&new=1127456%40work-the-flow-file-upload&sfp_email=&sfph_mail=
https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=1127457%40work-the-flow-file-upload&new=1127457%40work-the-flow-file-upload&sfp_email=&sfph_mail=
https://wpscan.com/vulnerability/a49a81a9-3d4b-4c8d-b719-fc513aceecc6
https://www.acunetix.com/vulnerabilities/web/wordpress-plugin-work-the-flow-file-upload-arbitrary-file-upload-2-5-2/
https://www.homelab.it/index.php/2015/04/04/wordpress-work-the-flow-file-upload-vulnerability/
https://www.rapid7.com/db/modules/exploit/unix/webapp/wp_worktheflow_upload/
https://www.wordfence.com/threat-intel/vulnerabilities/id/eb271cc8-01ec-45eb-9d6f-efc55c7c3923?source=cve
