WordPress Knews Multilingual Newsletters Cross-Site Scripting Scanner
Detects 'Cross-Site Scripting (XSS)' vulnerability in WordPress Knews Multilingual Newsletters affects v. 1.1.0.
Short Info
Level
High
Single Scan
Single Scan
Can be used by
Asset Owner
Estimated Time
10 seconds
Time Interval
11 days 5 hours
Scan only one
Domain, IPv4, Subdomain
Toolbox
-
WordPress Knews Multilingual Newsletters is a plugin designed for WordPress websites, commonly used by web administrators and content creators. This plugin facilitates the creation and management of newsletters in multiple languages, making it useful for websites with a global audience. Its features include customizable templates and integration with existing WordPress functionality to enhance communication with users. By enabling newsletters, website operators can maintain engagement and provide updates directly to their subscribers. The plugin is often utilized by businesses, media outlets, and bloggers looking to leverage email marketing. It aims to enhance user outreach through multi-language support and streamlined newsletter management.
The cross-site scripting vulnerability identified in the WordPress Knews Multilingual Newsletters plugin can allow attackers to inject malicious scripts into web pages viewed by other users. XSS vulnerabilities can lead to unauthorized script execution within users' browsers, exposing session cookies and other sensitive data. This particular vulnerability can be exploited without needing authentication, making it a critical security issue. Successful exploitation could lead to credential theft and further compromise of the website. It allows unauthorized manipulation of client-side scripts, tampering with user interactions while appearing legitimate. The inherent risk of such exploits makes addressing this vulnerability crucial to maintaining website integrity.
The vulnerable endpoint for this XSS is located within the plugin's fontpicker functionality, specifically in the parameter handling within the wysiwyg directory. An attacker can craft a URL that includes a malicious payload in the 'ff' parameter, which is later reflected back unsanitized in the webpage output. The payload can execute JavaScript code, demonstrating the vulnerability when "<script>alert(document.domain)</script>" is reflected in the browser. This particular issue stems from inadequate input validation, allowing script tags to be processed as valid content. Targeted attacks can exploit this oversight by embedding scripts in URLs shared with unsuspecting users. The lack of sanitation on user input makes it susceptible to injection.
Exploiting this XSS vulnerability can have several detrimental effects on both users and site administrators. Users may unwittingly execute the attacker’s script, compromising their personal information and leading to unauthorized access to their accounts. For administrators, the risk extends to potential defacement of the website and loss of control over website content. Additionally, successful exploitation could result in widespread phishing attacks against newsletter subscribers, leveraging the compromised system to distribute further malware or fraudulent communications. Such breaches damage the website’s reputation, erode user trust, and lead to regulatory implications.
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