CVE-2024-51838 in Pull This Plugin
Summary
by MITRE • 11/19/2024
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Jon Smajda Pull This allows DOM-Based XSS.This issue affects Pull This: from n/a through 1.1.
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Analysis
by VulDB Data Team • 02/24/2025
The vulnerability identified as CVE-2024-51838 represents a critical cross-site scripting flaw in the Pull This WordPress plugin, specifically impacting versions ranging from n/a through 1.1. This issue falls under the broader category of improper input neutralization during web page generation, which constitutes a fundamental security weakness that enables malicious actors to inject client-side scripts into web applications. The vulnerability manifests as a DOM-based XSS attack, meaning the malicious script executes within the victim's browser environment rather than being stored on the server. This particular variant of XSS is particularly concerning because it leverages the Document Object Model manipulation capabilities of modern web browsers to execute arbitrary code in the context of the affected website.
The technical flaw stems from insufficient validation and sanitization of user-supplied input parameters that are directly incorporated into the DOM without proper encoding or escaping mechanisms. When the Pull This plugin processes user input through its web interface or API endpoints, it fails to adequately neutralize potentially malicious content that could contain script tags, event handlers, or other XSS vectors. This oversight allows attackers to craft malicious payloads that, when executed, can manipulate the DOM structure and execute unauthorized scripts within the victim's browser session. The vulnerability operates at the client-side level, making it particularly difficult to detect through traditional server-side security measures since the malicious code never reaches the server's backend systems.
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 session hijacking, credential theft, data exfiltration, and manipulation of web page content. An attacker could potentially steal administrator cookies, redirect users to malicious sites, or inject additional malicious scripts that persist across user sessions. The DOM-based nature of the vulnerability means that even if the server-side input validation appears robust, the client-side execution environment remains vulnerable to manipulation. This type of vulnerability is particularly dangerous in environments where administrators or privileged users interact with the affected plugin, as successful exploitation could lead to complete compromise of the WordPress installation and potentially the entire web server infrastructure.
Mitigation strategies for CVE-2024-51838 should prioritize immediate remediation through plugin updates to version 1.2 or later, which presumably contain the necessary patches to address the XSS vulnerability. Organizations should also implement comprehensive input validation and output encoding mechanisms, particularly for all user-supplied content that gets rendered in web pages. Security measures should include the implementation of Content Security Policy headers to restrict script execution, regular security audits of plugin code, and the application of web application firewalls to detect and block suspicious input patterns. Additionally, administrators should conduct thorough testing of all plugins before deployment and maintain updated security monitoring systems to detect potential exploitation attempts. This vulnerability aligns with CWE-79 which specifically addresses Cross-site Scripting flaws, and follows ATT&CK technique T1059.007 for Scripting, highlighting the need for comprehensive defensive measures against client-side attack vectors. The remediation process should also include user education about the risks of interacting with untrusted content and the importance of maintaining up-to-date security practices across all web applications and plugins in use.