CVE-2024-49259 in Primary Addon for Elementor Plugin
Summary
by MITRE • 10/17/2024
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in nicheaddons Primary Addon for Elementor primary-addon-for-elementor allows Stored XSS.This issue affects Primary Addon for Elementor: from n/a through <= 1.5.8.
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Analysis
by VulDB Data Team • 04/06/2026
This vulnerability represents a critical cross-site scripting flaw that specifically targets the nicheaddons Primary Addon for Elementor plugin, a popular WordPress extension used for enhancing website functionality through the Elementor page builder. The vulnerability manifests as an improper neutralization of input during web page generation, creating a persistent stored XSS attack vector that can compromise user sessions and execute malicious code in the context of affected websites. The issue affects all versions of the plugin up to and including version 1.5.8, indicating a widespread exposure across multiple iterations of the software.
The technical implementation of this vulnerability stems from inadequate input sanitization within the plugin's codebase, particularly when processing user-supplied data that gets stored and subsequently rendered in web pages. Attackers can exploit this weakness by injecting malicious JavaScript payloads through input fields that are then permanently stored within the plugin's database or configuration files. When other users access pages generated by the compromised plugin, their browsers execute the stored malicious scripts, potentially leading to session hijacking, credential theft, or redirection to malicious sites. This stored nature of the vulnerability makes it particularly dangerous as the malicious code persists across multiple user interactions rather than requiring repeated exploitation attempts.
The operational impact of this vulnerability extends beyond simple script execution, as it can enable attackers to perform a wide range of malicious activities including but not limited to unauthorized access to user accounts, data exfiltration, and website defacement. The vulnerability's presence in a widely-used plugin means that compromised websites become potential entry points for broader attacks within their network infrastructure, potentially leading to supply chain compromises or lateral movement attacks. Security researchers have classified this issue under CWE-79 which specifically addresses Cross-Site Scripting vulnerabilities, and it aligns with ATT&CK technique T1566.001 for Initial Access through Phishing, as attackers could leverage the vulnerability to deliver malicious payloads through compromised websites.
Organizations affected by this vulnerability should prioritize immediate remediation through plugin updates to version 1.5.9 or later, which contain the necessary patches to address the input sanitization flaws. System administrators should conduct comprehensive vulnerability assessments to identify any instances of the vulnerable plugin across their WordPress installations, while also implementing additional security measures such as web application firewalls and input validation rules. The remediation process should include thorough testing of the updated plugin to ensure compatibility with existing website functionality, as well as monitoring for any signs of exploitation attempts or unauthorized access patterns. Regular security audits of third-party plugins and themes remain essential for maintaining overall website security posture, particularly given the persistent nature of stored XSS vulnerabilities that can remain undetected for extended periods.