CVE-2021-24789 Flat Preloader < 1.5.5 - Admin+ Stored Cross-Site Scripting
High-privilege users can inject malicious scripts via unescaped settings in the Flat Preloader WordPress plugin, leading to stored XSS.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2021-24789?
CVE-2021-24789 is a medium-severity cross-site scripting vulnerability in Unknown Flat Preloader, published on 1 Nov 2021. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Official description
The Flat Preloader WordPress plugin before 1.5.5 does not escape some of its settings when outputting them in attribute in the frontend, which could allow high privilege users to perform Cross-Site Scripting attacks even when the unfiltered_html is disallowed
Weakness: CWE-79
Which versions are affected by CVE-2021-24789?
It affects 1 product.
Products include Flat Preloader Project Flat Preloader.
How do I fix CVE-2021-24789?
No fix has been published for CVE-2021-24789 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2021-24789 being exploited?
There is no known exploitation of CVE-2021-24789 in the wild and no public exploit code.
Other vulnerabilities in Unknown Flat Preloader
Sources
Also known as GHSA-grw5-p86m-w8x6.