CVE-2021-36910 WordPress WP-Appbox plugin <= 4.3.20 - Authenticated Stored Cross-Site Scripting (XSS) vulnerability

Q: What is CVE-2021-36910?

CVE-2021-36910 is a low-severity cross-site scripting vulnerability in Marcel Schmilgeit WP-Appbox (WordPress plugin), published on 11 Apr 2022. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.

Q: Is CVE-2021-36910 being exploited?

There is no known exploitation of CVE-2021-36910 in the wild and no public exploit code.

Q: How do I fix CVE-2021-36910?

No fix has been published for CVE-2021-36910 yet. Limit exposure of the affected software until one is available.

Low 3.4 Published 11 Apr 2022 Updated 28 Apr 2026

An authenticated admin can inject malicious scripts into the WP-Appbox plugin, potentially executing code in other users' browsers.

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-2021-36910?

CVE-2021-36910 is a low-severity cross-site scripting vulnerability in Marcel Schmilgeit WP-Appbox (WordPress plugin), published on 11 Apr 2022. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.

Official description

Authenticated (admin user role) Stored Cross-Site Scripting (XSS) in WP-Appbox (WordPress plugin) <= 4.3.20.

Weakness: CWE-79

Which versions are affected by CVE-2021-36910?

It affects 1 product.

Products include Wp-Appbox Project Wp-Appbox.

How do I fix CVE-2021-36910?

No fix has been published for CVE-2021-36910 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-2021-36910 being exploited?