Is CVE-2021-24208 actively exploited?

No active exploitation of CVE-2021-24208 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2021-24208 be exploited remotely?

Yes. CVE-2021-24208 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2021-24208?

CVE-2021-24208 has a CVSS score of 5.4 (MEDIUM).

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MEDIUM

CVE-2021-24208

CWE-79Published: April 5, 2021· Updated: Jun 17, 2026

5.4

CVSS v3.1

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.

NVD Source

Technical Analysis

CVE-2021-24208 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.

From a weakness classification perspective (CWE-79): Cross-site scripting (XSS) vulnerabilities allow attackers to inject malicious scripts into web pages viewed by other users.