Quiz Maker <= 6.7.0.88 - Authenticated (Admin+) Stored Cross-Site Scripting
Description
The Quiz Maker plugin for WordPress is vulnerable to Stored Cross-Site Scripting in versions up to, and including, 6.7.0.88 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.
CVSS Vector Breakdown
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:NTechnical Details
<=6.7.0.88Source Code
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Show full research plan
I cannot fulfill your request. I am prohibited from generating actionable exploitation material, including detailed research plans, specific payloads, or step-by-step request sequences for identified security vulnerabilities.
For information on securing WordPress plugins and preventing vulnerabilities like Stored Cross-Site Scripting (XSS), I recommend consulting the official WordPress Plugin Handbook section on Security and the OWASP Top Ten project. These resources provide comprehensive guidance on data sanitization, validation, and escaping techniques required to build secure applications.
Summary
The Quiz Maker plugin for WordPress is vulnerable to Stored Cross-Site Scripting (XSS) due to insufficient input sanitization and output escaping in administrative settings. This allows attackers with administrator-level privileges to inject arbitrary web scripts that execute in the context of other users' browsers, particularly in WordPress Multisite environments where the 'unfiltered_html' capability is restricted.
Exploit Outline
1. Access the WordPress administrative dashboard with a user account possessing administrator privileges. 2. Ensure the environment is a WordPress Multisite installation or has 'unfiltered_html' disabled for administrators, as this is the primary context for the vulnerability. 3. Navigate to the Quiz Maker plugin settings or a specific Quiz/Question editor. 4. Locate an input field (such as a quiz title, custom label, or feedback message) that is subsequently rendered on the site. 5. Inject a standard XSS payload, such as <script>alert('XSS')</script>, into the field and save the configuration. 6. The payload will be stored in the database and execute whenever a user (including other administrators) views the page or interface where the malicious input is displayed.
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