CVE-2025-57425 in FAQ Management System
Summary
by MITRE • 08/26/2025
A Stored Cross-Site Scripting (XSS) vulnerability in SourceCodester FAQ Management System 1.0 allows an authenticated attacker to inject malicious JavaScript into the 'question' and 'answer' fields via the update-faq.php endpoint.
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Analysis
by VulDB Data Team • 08/29/2025
The stored cross-site scripting vulnerability identified as CVE-2025-57425 represents a critical security flaw within the SourceCodester FAQ Management System version 1.0. This vulnerability specifically targets the update-faq.php endpoint where authenticated users can manipulate the 'question' and 'answer' fields, creating a persistent threat vector that affects all users interacting with the system. The flaw stems from inadequate input validation and output encoding mechanisms that fail to properly sanitize user-supplied data before storing and rendering it within the web application interface. The vulnerability classifies under CWE-79 which defines Cross-Site Scripting as a condition where an application includes untrusted data in a new web page without proper validation or escaping, allowing attackers to execute scripts in the context of other users. This particular implementation allows threat actors to inject malicious JavaScript code that persists in the database and executes whenever other users view the affected FAQ entries, creating a dangerous attack surface that can be exploited for session hijacking, credential theft, or redirection to malicious sites.
The operational impact of this vulnerability extends beyond simple data corruption or user inconvenience, as it provides attackers with a persistent foothold within the system that can be leveraged for more sophisticated attacks. When authenticated users modify FAQ entries through the update-faq.php endpoint, their input undergoes insufficient sanitization processes that should normally validate and encode user content to prevent execution of malicious scripts. The vulnerability enables attackers to craft payloads that can steal session cookies, redirect users to phishing sites, or inject additional malicious code that can compromise the entire application environment. This represents a significant risk to the confidentiality and integrity of the system as attackers can manipulate content displayed to all users, potentially leading to unauthorized access to sensitive information or system compromise. The stored nature of this vulnerability means that once malicious code is injected, it remains active until manually removed by administrators, creating a persistent threat that can be exploited repeatedly without requiring additional authentication.
Security professionals should approach this vulnerability through the lens of the MITRE ATT&CK framework, specifically categorizing it under T1531 for "Use of Web Shell" and T1203 for "Exploitation for Client Execution" as attackers can leverage the persistent XSS to establish long-term access through malicious script execution. The vulnerability's exploitation requires minimal privileges since it targets an authenticated endpoint, making it particularly dangerous in environments where users have legitimate access to modify content. Mitigation strategies must include comprehensive input validation and output encoding at multiple layers of the application architecture, implementing proper content security policies, and conducting regular security audits of all user-input handling mechanisms. Organizations should implement strict sanitization routines that filter out potentially dangerous characters and script tags from user inputs, while also establishing robust monitoring systems to detect unusual content modifications. Additionally, the system should enforce proper access controls and implement logging mechanisms that can identify unauthorized modifications to FAQ entries, as well as regular security training for administrators to recognize and respond to potential XSS attack vectors. The vulnerability demonstrates the critical importance of defense-in-depth strategies and proper secure coding practices, particularly when handling user-generated content in web applications where the risk of XSS exploitation can have cascading effects on system security and user trust.