Protect Your XWiki Installation from Cross-Site Scripting Attacks

CVSScvssV3_1: 9.1

XWiki is an open source wiki platform that allows users to collaboratively edit and share documents. Unfortunately, versions of XWiki prior to 14.4.8, 14.10.5 and 15.1RC1 were vulnerable to cross-site scripting (XSS) attacks.

XSS attacks work by tricking a user into clicking a malicious link that executes code on their device. In the case of XWiki, a malicious user could edit a wiki document to include malicious HTML or JavaScript code. When another user viewed that document, the code would run with their permissions, allowing the attacker to access sensitive data or take control of the user’s account.

To perform an attack, a hacker only needed edit rights to insert the malicious code into a wiki page. They could then trick another user, even one with admin privileges, into viewing that page. This placed the entire XWiki installation at risk.

The good news is that XWiki developers have since patched this vulnerability in newer versions. To protect your XWiki wiki, be sure to update to the latest version immediately. Also, exercise caution when clicking links or viewing content from untrusted users. With some simple precautions, you can help prevent XSS attacks from compromising your XWiki site.