CVE-2025-60154 in MWW Disclaimer Buttons Plugin
Summary
by MITRE • 09/26/2025
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Jennifer Moss MWW Disclaimer Buttons allows Stored XSS. This issue affects MWW Disclaimer Buttons: from n/a through 3.41.
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Analysis
by VulDB Data Team • 09/26/2025
The CVE-2025-60154 vulnerability represents a critical cross-site scripting flaw within the MWW Disclaimer Buttons plugin developed by Jennifer Moss. This stored XSS vulnerability occurs during the web page generation process when user input is improperly sanitized before being rendered back to users. The vulnerability specifically affects versions ranging from an unspecified starting point through version 3.41, indicating a significant attack surface that could potentially impact numerous installations across different environments. The issue stems from the plugin's failure to adequately neutralize malicious input during the generation of web pages, creating an opportunity for attackers to inject persistent malicious scripts into the application's output.
The technical exploitation of this vulnerability involves attackers submitting malicious payloads through input fields that are then stored within the plugin's data handling mechanisms. When other users view pages generated by the plugin, these stored scripts execute in their browsers, potentially leading to session hijacking, credential theft, or redirection to malicious sites. The flaw operates at the intersection of input validation and output encoding, where the plugin fails to properly sanitize user-supplied data before incorporating it into dynamically generated HTML content. This type of vulnerability directly maps to CWE-79 which specifically addresses cross-site scripting flaws in web applications. The stored nature of this XSS means that the malicious code persists in the application's database or storage mechanisms, making it particularly dangerous as it can affect multiple users over extended periods.
The operational impact of CVE-2025-60154 extends beyond simple script execution, potentially enabling attackers to perform sophisticated attacks such as cookie theft, session manipulation, and data exfiltration. An attacker could leverage this vulnerability to gain unauthorized access to user accounts, modify content displayed on the website, or redirect users to phishing sites designed to capture sensitive information. The vulnerability's persistence through version 3.41 suggests that organizations running these plugin versions are at risk of prolonged exploitation, as the malicious scripts can remain active and undetected for months or years. This type of attack vector aligns with ATT&CK technique T1566.001 which covers credential access through phishing attacks, and T1583.001 which involves the development of tools for exploitation. The impact on website integrity and user trust can be severe, potentially leading to regulatory compliance violations under standards such as GDPR or PCI DSS.
Organizations should immediately implement mitigations including updating to the latest version of the MWW Disclaimer Buttons plugin where available, implementing proper input validation and output encoding mechanisms, and conducting thorough security assessments of all web applications. The recommended approach includes deploying web application firewalls with XSS detection capabilities, implementing content security policies to prevent script execution, and conducting regular security audits of third-party plugins. Additionally, organizations should consider implementing a comprehensive patch management strategy that includes monitoring for vulnerabilities in all installed software components. The vulnerability serves as a reminder of the critical importance of input sanitization and output encoding in web applications, aligning with security best practices outlined in OWASP Top 10 and NIST cybersecurity guidelines. Organizations should also establish incident response procedures specifically designed to address XSS vulnerabilities, ensuring rapid identification and remediation of similar security flaws across their digital infrastructure.