High · published November 11, 2025
⚡ An authenticated user can upload malicious files with a sneaky double extension! The Blocksy Companion plugin for WordPress is vulnerable to arbitrary file uploads in all versions up to 2.1.19! 🔥 Think of it like a restaurant that lets anyone with a reservation sneak in a dish that looks like a salad but is actually a dessert — all because they didn’t check the ingredients properly! This could lead to an attacker uploading malicious files onto your server, potentially allowing them to execute harmful code at will. Imagine someone slipping a Trojan horse into your kitchen, ready to wreak havoc — yikes!
Think of it like a restaurant that lets anyone with a reservation sneak in a dish that looks like a salad but is actually a dessert — all because they didn’t check the ingredients properly! This vulnerability in the Blocksy Companion plugin allows authenticated users to bypass file type validation and upload arbitrary files, including potentially harmful scripts disguised as valid SVG files.
This could lead to an attacker uploading malicious files onto your server, potentially allowing them to execute harmful code at will. Imagine someone slipping a Trojan horse into your kitchen, ready to wreak havoc — yikes! Update the Blocksy Companion plugin to version 2.1.20 or later to patch this vulnerability immediately. Additionally, verify your file upload validations to ensure they properly check for file types and sanitize inputs. 🛡️ You've got this! With these steps, you'll have your site secured in no time! 🚀