Critical · published April 10, 2024
CVSS calls it critical at 10.0. It sits in the 99.5th percentile for exploit probability.
🔥 A crafty user can turn any UI extension into an execution powerhouse! Before versions 4.10.19, 15.5.4, and 15.10-rc-1, XWiki treated parameters like their own programming language, opening the door to chaos! Think of it as a restaurant where any diner can step into the kitchen and change the menu without approval — a recipe for disaster! 🍽️ This vulnerability lets anyone with edit rights craft extensions that can run arbitrary code, jeopardizing the entire kitchen of your XWiki installation. An attacker could execute unauthorized code, potentially compromising every bit of data within your XWiki, from confidential documents to user accounts. This is absolutely devastating for your wiki's security and could lead to loss of integrity and availability, leaving your wiki vulnerable to manipulation or complete shutdown!
Think of it as a restaurant where any diner can step into the kitchen and change the menu without approval — a recipe for disaster! 🍽️ This vulnerability lets anyone with edit rights craft extensions that can run arbitrary code, jeopardizing the entire kitchen of your XWiki installation. XWiki prior to the specified versions processes UI extension parameters as Velocity code with full programming rights, allowing a user with edit privileges on their profile to create harmful extensions that result in remote code execution.
An attacker could execute unauthorized code, potentially compromising every bit of data within your XWiki, from confidential documents to user accounts. This is absolutely devastating for your wiki's security and could lead to loss of integrity and availability, leaving your wiki vulnerable to manipulation or complete shutdown! Update XWiki to version 14.10.19, 15.5.4, or 15.9-RC1 immediately to patch this critical vulnerability. Review user permissions to limit edit rights where possible and monitor for any suspicious activity. There are no workarounds available, so prompt action is essential to secure your instance. You've got this! With these steps, you'll be on your way to securing your XWiki installation in no time! 🛡️