CVE-2024-25101 in Maspik Spam Blacklist Plugin
Summary
by MITRE • 03/13/2024
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in yonifre Maspik – Spam Blacklist allows Stored XSS.This issue affects Maspik – Spam Blacklist: from n/a through 0.10.6.
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Analysis
by VulDB Data Team • 05/17/2026
This vulnerability represents a critical cross-site scripting flaw that enables attackers to inject malicious scripts into web pages viewed by other users. The issue exists within the yonifre Maspik – Spam Blacklist software where input validation and sanitization mechanisms fail to properly neutralize user-supplied data during web page generation processes. This allows malicious actors to store harmful scripts that execute in the context of other users' browsers when they access affected pages.
The technical flaw stems from insufficient input sanitization and output encoding practices within the application's web rendering pipeline. When users submit data through various interface elements or API endpoints, the system does not adequately filter or escape special characters that could be interpreted as executable script code. This weakness creates a persistent XSS vector where malicious payloads can be stored server-side and subsequently executed whenever legitimate users view the affected content. The vulnerability affects all versions from the initial release through version 0.10.6, indicating a long-standing security gap in the software's input handling mechanisms.
The operational impact of this stored XSS vulnerability is severe and multifaceted. Attackers can leverage this weakness to steal user sessions, credentials, and sensitive information from authenticated users. The persistent nature of stored XSS means that malicious scripts remain active until manually removed from the system, providing attackers with extended access windows. Additionally, threat actors could use this vulnerability to redirect users to malicious domains, deface web pages, or perform actions on behalf of victims with their privileges. The attack surface is particularly concerning given that this affects a spam blacklist tool, which typically handles sensitive security data and user information.
Mitigation strategies should focus on implementing comprehensive input validation and output encoding mechanisms throughout the application. The software should employ strict sanitization of all user-supplied data before storage and rendering, utilizing established libraries and frameworks designed to prevent XSS attacks. Regular security updates and patches should be applied immediately upon availability, with version 0.10.7 and later recommended for deployment. Organizations should also implement proper content security policies, utilize secure coding practices, and conduct regular penetration testing to identify and remediate similar vulnerabilities. This vulnerability aligns with CWE-79 which specifically addresses cross-site scripting flaws, and represents a significant concern under ATT&CK technique T1566 related to credential access through phishing and malicious web content delivery.