PT-2021-15748 · WordPress · Elementor Website Builder

Ramuel Gall · Published 2021-04-05 · Updated 2021-04-09 · CVE-2021-24203

Positive Technologies (AI Summary)

CVSS v3.1

5.4

Medium

Base vector

AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Name of the Vulnerable Software and Affected Versions: Elementor Website Builder WordPress plugin versions prior to 3.1.4

Description: The issue allows a user with Contributor or above permissions to execute JavaScript code when a saved page is viewed or previewed. This is achieved by sending a modified 'save builder' request with the html tag parameter set to 'script' and the text parameter containing JavaScript. The element control lists a fixed set of possible html tags, but it is still possible to exploit this issue.

Recommendations: For Elementor Website Builder WordPress plugin versions prior to 3.1.4, update to version 3.1.4 or later to resolve the issue. As a temporary workaround, consider restricting the html tag parameter in the divider widget to prevent it from being set to 'script' until a patch is applied. Additionally, restrict access to the 'save builder' request to minimize the risk of exploitation.

Exploit

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2021-24203

Affected Products

Elementor Website Builder

References · 5

• 🔥 https://wpscan.com/vulnerability/aa152ad0-5b3d-4d1f-88f4-6899a546e72e · Exploit
• 🔥 https://wordfence.com/blog/2021/03/cross-site-scripting-vulnerabilities-in-elementor-impact-over-7-million-sites · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2021-24203 · Security Note
• https://osv.dev/vulnerability/CVE-2021-24203 · Vendor Advisory
• https://t.me/cvenotify/12671 · Telegram Post