06 June 2026
Reference: CVE-2015-10144
1. What is being reported?
The Responsive Thumbnail Slider plugin for WordPress has a weakness in its image upload feature. It does not properly check the types of files being uploaded, so a user with subscriber-level access or higher could upload dangerous files disguised as images. This could let attackers run harmful code on the website's server.
2. What this means in plain English
If your website uses this plugin, an attacker might be able to upload files that let them control your site or access sensitive information. This could lead to your website being defaced, data being stolen, or your site being used to attack others.
3. Could this affect a small business?
Small businesses, charities, clubs, or any organisation using WordPress with this specific plugin installed and active could be at risk. If you do not use WordPress or do not have this plugin, you are unlikely to be affected.
4. What to do now
- Check if your website uses the Responsive Thumbnail Slider plugin for WordPress.
- If it does, ask your IT provider or website manager to update the plugin to the latest safe version or remove it if no update is available.
- Ensure that user accounts have the minimum necessary permissions to reduce risk.
- Monitor your website for any unusual activity or unexpected changes.
5. Ask your IT provider
Can you confirm if our WordPress site uses the Responsive Thumbnail Slider plugin, and if so, has it been updated or removed to protect against the file upload vulnerability CVE-2015-10144?
6. Bottom line
If you use this WordPress plugin, act quickly to update or remove it to keep your website safe.
Information based on NVD, CISA KEV, and reputable security reporting.