CVE-2025-7057 in Quiz Extension
Summary
by MITRE • 07/07/2025
Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation Mediawiki - Quiz Extension allows Stored XSS.This issue affects Mediawiki - Quiz Extension: from 1.39.X before 1.39.13, from 1.42.X before 1.42.7, from 1.43.X before 1.43.2.
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Analysis
by VulDB Data Team • 07/07/2025
The CVE-2025-7057 vulnerability represents a critical cross-site scripting weakness within the Wikimedia Foundation Mediawiki Quiz Extension, specifically targeting the improper neutralization of input during web page generation processes. This flaw enables attackers to execute malicious scripts in the context of victim browsers through stored XSS vectors, making it particularly dangerous for collaborative wiki environments where user-generated content is prevalent. The vulnerability affects multiple versions of the Quiz Extension, including releases from 1.39.X before 1.39.13, 1.42.X before 1.42.7, and 1.43.X before 1.43.2, indicating a widespread impact across the extension's version history.
The technical root cause of this vulnerability lies in the insufficient sanitization and validation of user input within the Quiz Extension's web page generation mechanisms. When users create or modify quiz content, the system fails to properly neutralize malicious script payloads that may be embedded within quiz questions, answers, or other interactive elements. This improper input handling creates an attack surface where crafted malicious code can be stored within the wiki's database and subsequently executed whenever other users view the affected quiz content. The vulnerability operates as a stored XSS attack because the malicious payload persists in the system and affects multiple users rather than requiring a single interaction with a crafted URL.
The operational impact of CVE-2025-7057 extends beyond simple script execution, potentially enabling attackers to hijack user sessions, steal sensitive information, manipulate wiki content, or redirect users to malicious sites. In the context of Wikimedia projects, where thousands of users contribute to collaborative knowledge bases, this vulnerability could allow adversaries to compromise the integrity of educational and reference materials. The attack vector is particularly concerning because it leverages the trust users place in wiki content, making it difficult for victims to distinguish between legitimate and malicious content. Security researchers have classified this vulnerability under CWE-79, which specifically addresses Cross-site Scripting flaws in web applications.
Mitigation strategies for CVE-2025-7057 should prioritize immediate patching of affected versions to the latest stable releases, as provided by the Wikimedia Foundation. Organizations maintaining affected Wiki installations should implement comprehensive input validation and output encoding mechanisms, ensuring all user-generated content is properly sanitized before storage and display. Network security measures including web application firewalls and content security policies should be deployed to provide additional defense layers. The ATT&CK framework categorizes this vulnerability under T1059.007 for Scripting, with potential lateral movement capabilities through session hijacking. Regular security assessments and user education regarding suspicious content are essential components of a comprehensive security posture. System administrators should also consider implementing automated monitoring for unusual content modifications and establish incident response procedures specifically addressing XSS vulnerabilities in collaborative environments.