WordPress Authenticated JavaScript File Upload

The old versions of WordPress are vulnerable to cross-site scripting attacks. The old WordPress does not require the unfiltered_html capability to upload the javascript files. This vulnerability could allow attackers to execute Cross-site Scripting attacks using a crafted vulnerable file. Cross-site Scripting (XSS) is a client-side code injection attack where, an attacker can execute malicious scripts into a website or web application. This flaw can cause attackers to access any cookies, session tokens, or other sensitive information retained by the client side.

Impact and Fixes

Written by

Prathap

Co-founder, Director

Prathap has around 20 years of experience and has worked on various projects in leading companies like Hitachi, Toshiba, Schneider Electric, ABB, Panasonic, and MicroFuzzy. His expertise lies in architecting, designing, and developing secure projects covering various aspects of software development, processes, and methodology.