Rapid7

vulnerability

WordPress Plugin: flat-preloader: CVE-2021-24685: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Severity
5
CVSS
(AV:N/AC:L/Au:N/C:N/I:P/A:N)
Published
Sep 28, 2021
Added
May 15, 2025
Modified
May 4, 2026

Description

The Flat Preloader WordPress plugin before 1.5.4 does not enforce nonce checks when saving its settings, as well as does not sanitise and escape them, which could allow attackers to a make logged in admin change them with a Cross-Site Scripting payload (triggered either in the frontend or backend depending on the payload)

Solution

flat-preloader-plugin-cve-2021-24685
Title
Rapid7 Labs

2026 Global Threat Landscape Report

The predictive window has collapsed. Exploitation follows disclosure in days. See how attackers are accelerating and how to stay ahead.