Add Custom CSS and JS <= 1.20 - Stored XSS via CSRF

2024-04-1800:00:00

Bob Matyas

wpscan.com

plugin security vulnerability

csrf attack

stored xss

software update

5.6 Medium

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

9.2%

JSON

Description The plugin does not have CSRF check in some places, and is missing sanitisation as well as escaping, which could allow attackers to make logged in as author and above add Stored XSS payloads via a CSRF attack

PoC

Make an author (or above role) open the following HTML: