CVE-2024-29106 in Premium Addons for Elementor Plugin
Summary
by MITRE • 03/19/2024
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Leap13 Premium Addons for Elementor allows Stored XSS.This issue affects Premium Addons for Elementor: from n/a through 4.10.16.
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Analysis
by VulDB Data Team • 04/14/2025
The vulnerability CVE-2024-29106 represents a critical cross-site scripting flaw in the Leap13 Premium Addons for Elementor plugin, specifically impacting versions ranging from an unspecified initial version through 4.10.16. This weakness falls under the well-documented CWE-79 category for Improper Neutralization of Input During Web Page Generation, which is a fundamental web application security issue that enables attackers to inject malicious scripts into web pages viewed by other users. The vulnerability manifests as a stored XSS attack vector, meaning that malicious input is permanently stored on the server and subsequently executed whenever users access the affected web page. This particular implementation affects the Elementor page builder ecosystem where the premium addons extend the core functionality with additional widgets and features.
The technical exploitation of this vulnerability occurs when untrusted user input is improperly handled during the web page generation process within the Elementor environment. Attackers can craft malicious payloads that get stored in the plugin's data storage mechanisms and then executed in the context of other users' browsers when they view pages that contain the compromised content. This stored nature of the vulnerability means that the malicious script persists across multiple user sessions and can affect any visitor to the compromised website. The flaw likely exists in how the plugin processes and renders user-provided data within HTML output generation, failing to properly sanitize or encode potentially dangerous characters and script tags before rendering them on web pages.
The operational impact of this vulnerability extends beyond simple script execution as it creates a persistent threat vector that can be leveraged for various malicious activities including session hijacking, credential theft, data exfiltration, and redirection to malicious websites. Attackers can exploit this weakness to establish persistent backdoors on compromised websites, steal administrator credentials, manipulate content, or even deploy additional malware through browser-based attacks. The vulnerability affects websites using Elementor as their primary page builder platform, making it particularly dangerous as Elementor is widely adopted across WordPress ecosystems. The stored nature of the XSS allows attackers to maintain long-term access to compromised sites without requiring repeated exploitation attempts, as the malicious code remains embedded in the server-side content until manually removed.
Security mitigations for CVE-2024-29106 should prioritize immediate patching of affected versions to 4.10.17 or later, as provided by the vendor. Organizations should implement comprehensive input validation and output encoding mechanisms that follow the OWASP XSS Prevention Cheat Sheet guidelines, specifically applying proper HTML escaping and context-appropriate encoding for all user-supplied data. Network-based protections such as web application firewalls can provide additional defense-in-depth layers, though they should not be considered replacements for proper code-level fixes. Security teams should conduct thorough audits of all Elementor plugin installations and implement monitoring for suspicious content injection patterns. The vulnerability aligns with ATT&CK technique T1566.001 for initial access through malicious content and T1059.007 for command and control through script injection, making it a significant threat vector requiring immediate attention. Regular security assessments of third-party plugins and maintaining updated security practices are essential for preventing similar vulnerabilities in the future.