What’s Vulnerable › Vulnerabilities

CVE-2021-24202: Elementor < 3.1.2 - Authenticated Stored Cross-Site Scripting (XSS) in Heading Widget

• Severity: medium (CVSS 5.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-04-05 · updated 2026-06-17
• Weakness: CWE-79

Description

In the Elementor Website Builder WordPress plugin before 3.1.4, the heading widget (includes/widgets/heading.php) accepts a ‘header_size’ parameter. Although the element control lists a fixed set of possible html tags, it is possible for a user with Contributor or above permissions to send a modified ‘save_builder’ request with this parameter set to ‘script’ and combined with a ‘title’ parameter containing JavaScript, which will then be executed when the saved page is viewed or previewed.

Affected products

• Elementor Website Builder: before 3.1.4 — fixed in 3.1.4

How to fix

Upgrade to a fixed version: Elementor Website Builder 3.1.4. Check the vendor advisory for mitigations.

References

• https://wpscan.com/vulnerability/b72bd13d-c8e2-4347-b009-542fc0fe21bb
• https://www.wordfence.com/blog/2021/03/cross-site-scripting-vulnerabilities-in-elementor-impact-over-7-million-sites/
• https://wpscan.com/vulnerability/b72bd13d-c8e2-4347-b009-542fc0fe21bb
• https://www.wordfence.com/blog/2021/03/cross-site-scripting-vulnerabilities-in-elementor-impact-over-7-million-sites/

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