CVE-2021-24243 WPBakery Page Builder Clipboard < 4.5.6 - Subscriber+ Stored Cross-Site Scripting (XSS)
Low-privilege users can inject malicious scripts via an unsanitized AJAX action, leading to stored XSS in admin pages.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2021-24243?
CVE-2021-24243 is a medium-severity cross-site scripting vulnerability in bitorbit WPBakery Page Builder (Visual Composer) Clipboard, published on 5 May 2021. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
An AJAX action registered by the WPBakery Page Builder (Visual Composer) Clipboard WordPress plugin before 4.5.6 did not have capability checks nor sanitization, allowing low privilege users (subscriber+) to call it and set XSS payloads, which will be triggered in all backend pages.
Weakness: CWE-79
Which versions are affected by CVE-2021-24243?
It affects 1 product.
Products include Wpbakery Page Builder Clipboard Project Wpbakery Page Builder Clipboard.
How do I fix CVE-2021-24243?
No fix has been published for CVE-2021-24243 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-2021-24243 being exploited?
There is no known exploitation of CVE-2021-24243 in the wild and no public exploit code.
Other vulnerabilities in bitorbit WPBakery Page Builder (Visual Composer) Clipboard
Sources
Also known as GHSA-q5g9-jf88-x4g8.