CVE-2021-24208 WP Page Builder < 1.2.4 - Multiple Stored Cross-Site scripting (XSS)
Lower-privileged users can inject malicious JavaScript into pages via unfiltered HTML widgets, potentially leading to code execution or account takeover.
- 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-2021-24208?
CVE-2021-24208 is a medium-severity cross-site scripting vulnerability in Unknown WP Page Builder, published on 5 Apr 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
The editor of the WP Page Builder WordPress plugin before 1.2.4 allows lower-privileged users to insert unfiltered HTML, including JavaScript, into pages via the “Raw HTML” widget and the “Custom HTML” widgets (though the custom HTML widget requires sending a crafted request - it appears that this widget uses some form of client side validation but not server side validation), all of which are added via the “page_builder_data” parameter when performing the “wppb_page_save” AJAX action. It is also possible to insert malicious JavaScript via the “wppb_page_css” parameter (this can be done by closing out the style tag and opening a script tag) when performing the “wppb_page_save” AJAX action.
Weakness: CWE-79
Which versions are affected by CVE-2021-24208?
It affects 1 product.
Products include Themeum Wp Page Builder.
How do I fix CVE-2021-24208?
No fix has been published for CVE-2021-24208 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-2021-24208 being exploited?
There is no known exploitation of CVE-2021-24208 in the wild and no public exploit code.
Other vulnerabilities in Unknown WP Page Builder
- CVE-2022-3830 WP Page Builder <= 1.2.8 - Admin+ Stored Cross-Site
- CVE-2022-40963 WordPress WP Page Builder plugin <= 1.2.6 - Multiple Auth. Stored Cross-Site Scripting (XSS) vulnerabilities
- CVE-2021-24207 WP Page Builder < 1.2.4 - Insecure default configuration Allows Subscribers Editing Access to Posts
Sources
Also known as GHSA-pf43-g47c-f3f8.