CVE-2025-23740 in Easy School Registration Plugin
Summary
by MITRE • 03/03/2025
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in NotFound Easy School Registration allows Reflected XSS. This issue affects Easy School Registration: from n/a through 3.9.8.
If you want to get best quality of vulnerability data, you may have to visit VulDB.
Analysis
by VulDB Data Team • 03/03/2025
The CVE-2025-23740 vulnerability represents a critical cross-site scripting flaw within the NotFound Easy School Registration system that enables attackers to execute malicious scripts in the context of victim browsers. This vulnerability specifically manifests as a reflected cross-site scripting issue, where malicious input is immediately reflected back to users without proper sanitization or encoding mechanisms. The flaw exists in the web page generation process where user-supplied input is not adequately neutralized before being rendered in web responses, creating an opportunity for attackers to inject malicious code that executes in the victim's browser context. The vulnerability affects all versions of the Easy School Registration system from the initial release through version 3.9.8, indicating a long-standing issue that has not been properly addressed in the codebase.
The technical implementation of this vulnerability stems from insufficient input validation and output encoding practices within the application's web rendering pipeline. When users provide input through various registration forms or parameters, the system fails to properly sanitize or encode this data before incorporating it into dynamically generated web pages. This allows attackers to craft malicious payloads that, when executed, can steal session cookies, redirect users to malicious sites, or perform actions on behalf of authenticated users. The reflected nature of this XSS means that the malicious script is executed immediately in the victim's browser when they access a specially crafted URL containing the malicious payload, making it particularly dangerous for web applications that process user input directly in their responses.
The operational impact of this vulnerability extends beyond simple script execution, as it can enable sophisticated attack vectors that compromise user data and application integrity. Attackers can leverage this vulnerability to hijack user sessions, steal sensitive information such as login credentials or personal data, and potentially escalate privileges within the application. The vulnerability's presence in versions through 3.9.8 suggests that organizations using this system may be exposed to persistent threats, as the flaw remains unpatched across multiple releases. This creates a significant risk for educational institutions that rely on the Easy School Registration system for student data collection, as the vulnerability could be exploited to access confidential student information or manipulate registration processes.
Security practitioners should implement immediate mitigations including input validation, output encoding, and the implementation of Content Security Policies to prevent script execution. The vulnerability aligns with CWE-79 which specifically addresses cross-site scripting flaws in web applications, and it maps to ATT&CK technique T1566.001 for initial access through spearphishing attachments or links. Organizations should also consider implementing web application firewalls and regular security testing to identify similar issues in other components of their educational technology infrastructure. The vulnerability highlights the importance of proper input sanitization and output encoding practices as fundamental security controls, particularly in applications handling sensitive personal data. Additionally, developers should adopt secure coding practices that prevent the direct inclusion of user input in web responses without proper sanitization, as this vulnerability demonstrates the critical need for defensive programming approaches that protect against injection attacks.