CVE-2024-37553 in Testimonials Widget Plugin
Summary
by MITRE • 07/06/2024
Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Axelerant Testimonials Widget allows Stored XSS.This issue affects Testimonials Widget: from n/a through 4.0.4.
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Analysis
by VulDB Data Team • 03/20/2025
The CVE-2024-37553 vulnerability represents a critical stored cross-site scripting flaw within the Axelerant Testimonials Widget plugin for WordPress systems. This vulnerability falls under the CWE-79 category of Cross-Site Scripting and specifically manifests as an improper neutralization of input during web page generation processes. The flaw allows attackers to inject malicious scripts that persist in the application's database and execute whenever the affected testimonials are displayed on web pages. The vulnerability impacts all versions of the Testimonials Widget plugin from the initial release through version 4.0.4, indicating a significant attack surface that has remained unaddressed for an extended period.
The technical exploitation of this vulnerability occurs when user-supplied input containing malicious script code is processed and stored within the plugin's testimonial database entries. When the testimonials are subsequently rendered on web pages, the stored scripts execute in the context of other users' browsers, potentially enabling session hijacking, credential theft, or redirection to malicious sites. This stored nature of the vulnerability means that the malicious code persists even after the initial injection, making it particularly dangerous as it can affect multiple users over time. The vulnerability operates at the application layer where user input is not properly sanitized or encoded before being stored and later displayed in HTML contexts.
The operational impact of CVE-2024-37553 extends beyond simple script execution, as it can enable attackers to perform various malicious activities including but not limited to cookie theft, defacement of website content, redirection to phishing sites, and potential privilege escalation within the affected WordPress environment. The vulnerability directly aligns with ATT&CK technique T1566.001 for initial access through malicious content and can facilitate later stages of the attack chain including privilege escalation and persistence mechanisms. Organizations running affected versions of the Axelerant Testimonials Widget plugin face significant risk of unauthorized access and data compromise, particularly in environments where testimonials are frequently updated by users with administrative privileges or where the plugin is widely used across multiple sites.
Mitigation strategies for CVE-2024-37553 should prioritize immediate patching of the affected plugin to version 4.0.5 or later, which contains the necessary fixes for the XSS vulnerability. System administrators should also implement input validation and output encoding measures to prevent similar issues in other parts of their web applications, adhering to the principle of least privilege for testimonial submission processes. Additional defensive measures include monitoring for suspicious user activity, implementing web application firewalls, and conducting regular security audits of third-party plugins. The vulnerability demonstrates the critical importance of proper input sanitization and output encoding practices, which are fundamental requirements in the OWASP Top Ten security controls and should be integrated into all web application development processes to prevent similar stored XSS vulnerabilities from occurring in the future.