Impact Analysis

This vulnerability can allow attackers to execute arbitrary JavaScript in the browsers of users who view the affected FAQ entries. Potential impacts include stealing session cookies or tokens, conducting phishing attacks by mimicking site content, manipulating the webpage DOM to display false information, and redirecting users to malicious websites or exploiting browser vulnerabilities. [1]

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Executive Summary

CVE-2025-57425 is a Stored Cross-Site Scripting (XSS) vulnerability in the FAQ Management System Using PHP and MySQL version 1.0. It occurs because the application does not sanitize or encode user inputs in the 'question' and 'answer' fields when updating FAQ entries via the update-faq.php endpoint. This allows an authenticated attacker to inject malicious JavaScript code that is stored in the database and executed in the browsers of users who view the affected FAQ entries. [1]

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Detection Guidance

This vulnerability can be detected by attempting to inject typical XSS payloads into the 'question' and 'answer' fields via the update-faq.php endpoint and observing if the payloads are stored and executed when viewing the FAQ entries. For example, you can use curl to send a POST request with a script payload to test if the input is sanitized: curl -X POST http://localhost/faq-management-system/endpoint/update-faq.php \ -H "Content-Type: application/x-www-form-urlencoded" \ -d "tbl_faq_id=1&question=<script>alert('test')</script>&answer=<script>alert('test')</script>" If the alert executes when viewing the FAQ page, the vulnerability exists. Additionally, monitoring HTTP traffic for suspicious script injections in these parameters can help detect exploitation attempts. [1]

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Mitigation Strategies

Immediate mitigation steps include implementing proper input validation and output encoding on the 'question' and 'answer' fields in the update-faq.php endpoint to prevent malicious scripts from being stored and executed. Until a patch is applied, restrict access to the FAQ update functionality to trusted users only, and consider sanitizing inputs at the web application firewall or proxy level. Additionally, educate users to avoid clicking suspicious links and monitor logs for unusual activity related to FAQ updates. [1]

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