CVE-2025-46521 in WS Force Login Page Plugin
Summary
by MITRE • 04/24/2025
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Silver Muru WS Force Login Page allows Stored XSS. This issue affects WS Force Login Page: from n/a through 3.0.3.
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Analysis
by VulDB Data Team • 04/24/2025
The vulnerability identified as CVE-2025-46521 represents a critical cross-site scripting flaw within the Silver Muru WS Force Login Page plugin, specifically impacting versions ranging from an unspecified starting point through 3.0.3. This weakness falls under the well-documented category of improper input neutralization during web page generation, creating a persistent security risk that enables attackers to inject malicious scripts into web pages viewed by other users. The stored nature of this vulnerability means that malicious payloads are not only executed immediately but are permanently retained within the application's database or storage mechanisms, making the attack vector particularly dangerous and long-lasting.
The technical implementation of this vulnerability stems from insufficient sanitization of user-supplied input within the login page functionality. When users interact with the forced login page, their input data is not properly validated or escaped before being rendered back to other users within the web interface. This failure to neutralize potentially malicious content creates an environment where attackers can submit crafted script code that gets stored and subsequently executed whenever other users access the affected page. The vulnerability directly maps to CWE-79 which defines Cross-Site Scripting as a condition where an application incorporates untrusted data into web pages without proper validation or escaping mechanisms.
From an operational perspective, this vulnerability poses significant risks to the integrity and security of web applications utilizing the affected plugin. Attackers can leverage this weakness to steal session cookies, perform unauthorized actions on behalf of users, redirect victims to malicious websites, or even execute more sophisticated attacks such as defacement of web content. The stored nature of the XSS vulnerability means that the attack can persist long after the initial compromise, potentially affecting multiple users over extended periods without requiring repeated exploitation attempts. This characteristic makes the vulnerability particularly attractive to threat actors seeking persistent access or data exfiltration capabilities.
Security professionals should immediately implement mitigations including input validation and output encoding for all user-supplied data within the plugin's login functionality. The recommended approach involves implementing strict sanitization routines that strip or escape potentially dangerous characters and script tags from user input before storage or rendering. Additionally, developers should employ Content Security Policy headers to limit script execution contexts and implement proper escape sequences when rendering dynamic content. Organizations should also conduct comprehensive security assessments of all plugins and themes that handle user input to identify similar vulnerabilities. The ATT&CK framework categorizes this type of vulnerability under T1190 - Exploit Public-Facing Application, highlighting the importance of maintaining up-to-date software and implementing robust input validation as primary defensive measures. Regular security audits and penetration testing should be conducted to ensure that such vulnerabilities are identified and remediated before they can be exploited by malicious actors in real-world scenarios.