CVE-2024-50429 in Magazine Blocks Plugin
Summary
by MITRE • 10/28/2024
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in BlockArt Magazine Blocks magazine-blocks allows DOM-Based XSS.This issue affects Magazine Blocks: from n/a through <= 1.3.15.
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Analysis
by VulDB Data Team • 04/06/2026
The vulnerability identified as CVE-2024-50429 represents a critical cross-site scripting weakness within the BlockArt Magazine Blocks plugin, specifically manifesting as a DOM-based XSS flaw. This vulnerability resides in the magazine-blocks component of the plugin and impacts versions ranging from the initial release through version 1.3.15. The issue stems from inadequate input sanitization during web page generation processes, creating an exploitable vector that allows malicious actors to inject malicious scripts into web pages viewed by unsuspecting users. The vulnerability specifically affects the plugin's handling of user-supplied data within the DOM context, making it particularly dangerous as it can execute within the browser environment without requiring server-side processing.
The technical flaw manifests when the plugin fails to properly neutralize user input that gets incorporated into dynamically generated web content. In DOM-based XSS scenarios, the malicious script is executed as a result of modifying the DOM structure in the victim's browser rather than being reflected from the server. This particular vulnerability allows attackers to manipulate parameters within the web application's URL or other client-side elements, which are then processed and executed within the browser context without proper sanitization. The issue directly maps to CWE-79 which defines the improper neutralization of input during web page generation as a primary weakness leading to XSS vulnerabilities.
The operational impact of this vulnerability is significant as it enables attackers to execute arbitrary JavaScript code within the context of a victim's browser session. This could allow for session hijacking, credential theft, redirection to malicious sites, or manipulation of the affected web page content. Given that the vulnerability affects a magazine blocks plugin, the attack surface extends to websites utilizing this specific WordPress plugin, potentially compromising thousands of sites depending on the plugin's adoption rate. The DOM-based nature of the vulnerability means that even if server-side input validation is in place, the client-side execution context remains vulnerable to attack.
Mitigation strategies should focus on immediate patching of the affected plugin versions to the latest secure releases where the XSS vulnerability has been addressed. Administrators should implement comprehensive input validation and output encoding measures within their web applications, particularly for any user-supplied content that gets rendered in the browser. The implementation of Content Security Policy headers can provide additional protection layers against XSS attacks by restricting the sources from which scripts can be loaded and executed. Regular security audits and penetration testing should be conducted to identify similar vulnerabilities in other plugins or custom code. Organizations should also consider implementing web application firewalls and monitoring systems to detect and prevent exploitation attempts. According to ATT&CK framework, this vulnerability falls under T1059.007 for the execution of malicious code through script interpreters, and T1566 for the initial compromise through malicious web content delivery.