CVE-2025-65134: School Management System XSS Vulnerability

CVE-2025-65134 Overview

A reflected cross-site scripting (XSS) vulnerability has been identified in manikandan580 School-management-system version 1.0. The vulnerability exists in the /studentms/admin/contact-us.php endpoint and can be exploited through the email POST parameter. Attackers can inject malicious scripts that execute in the context of a victim's browser session when they interact with a crafted request.

Critical Impact

Successful exploitation allows attackers to execute arbitrary JavaScript in admin users' browsers, potentially leading to session hijacking, credential theft, or unauthorized actions within the school management system.

Affected Products

• manikandan580 School-management-system version 1.0
• Specifically affects /studentms/admin/contact-us.php endpoint

Discovery Timeline

• 2026-04-14 - CVE-2025-65134 published to NVD
• 2026-04-14 - Last updated in NVD database

Technical Details for CVE-2025-65134

Vulnerability Analysis

This reflected XSS vulnerability occurs due to insufficient input sanitization in the contact-us functionality of the School-management-system administrative interface. The email POST parameter accepts user-supplied input that is reflected back to the user without proper encoding or validation, allowing arbitrary JavaScript execution.

As this vulnerability exists within the admin panel, successful exploitation could have significant impact on the school management system's security posture. An attacker who tricks an administrator into submitting a crafted form could potentially gain access to sensitive student data, modify records, or escalate their privileges within the application.

Root Cause

The vulnerability stems from improper input validation and output encoding in the contact-us.php script. When user input is received through the email POST parameter, the application fails to sanitize special characters such as <, >, ", and ' before reflecting the content back in the HTTP response. This allows attackers to break out of the expected context and inject arbitrary HTML or JavaScript code.

Attack Vector

The attack requires social engineering to be successful, as the attacker must convince an authenticated administrator to submit a malicious form or click a crafted link. The attack flow typically involves:

1. Attacker crafts a malicious POST request containing JavaScript payload in the email parameter
2. Attacker creates a phishing page or uses other social engineering techniques to trick an admin user
3. When the victim submits the request, the malicious script executes in their browser
4. The script can then steal session cookies, perform actions as the admin, or redirect to malicious sites

The vulnerability is exploited by injecting JavaScript payloads through the email parameter. Since no verified code examples are available, readers should refer to the GitHub Security Advisory for technical details and proof-of-concept information.

Detection Methods for CVE-2025-65134

Indicators of Compromise

• Unusual POST requests to /studentms/admin/contact-us.php containing script tags or event handlers in the email parameter
• Web server logs showing encoded JavaScript payloads such as %3Cscript%3E or javascript: patterns
• Failed login attempts or session anomalies following contact form submissions
• Unexpected admin account activity or configuration changes

Detection Strategies

• Implement Web Application Firewall (WAF) rules to detect and block XSS patterns in POST parameters
• Configure log monitoring to alert on requests containing common XSS payload signatures targeting the contact-us.php endpoint
• Deploy browser-based security extensions that can detect reflected content execution
• Use Content Security Policy (CSP) headers to restrict script execution sources

Monitoring Recommendations

• Enable detailed logging for all requests to administrative endpoints including /studentms/admin/contact-us.php
• Monitor for unusual patterns in the email parameter such as HTML tags, JavaScript event handlers, or encoded characters
• Set up alerts for multiple requests to the vulnerable endpoint from the same source in short time periods
• Review admin session activity logs for signs of unauthorized access following contact form interactions

How to Mitigate CVE-2025-65134

Immediate Actions Required

• Restrict access to the administrative panel using IP whitelisting or VPN requirements
• Implement Content Security Policy (CSP) headers to mitigate XSS impact by restricting inline script execution
• Deploy a Web Application Firewall (WAF) with XSS protection rules enabled
• Educate administrative users about phishing risks and verify all form submissions originate from trusted sources

Patch Information

No official vendor patch is currently available for this vulnerability. Organizations using School-management-system 1.0 should implement the workarounds described below and monitor the GitHub Security Advisory for updates.

Workarounds

• Apply input validation and output encoding to the email parameter in contact-us.php by implementing HTML entity encoding functions
• Implement CSP headers to prevent inline JavaScript execution with directives like script-src 'self'
• Use HTTP-only and Secure flags on session cookies to reduce session hijacking risk
• Consider disabling or restricting access to the contact-us functionality until a proper fix is available

# Apache configuration to add Content Security Policy header
<Directory "/var/www/html/studentms/admin">
    Header always set Content-Security-Policy "default-src 'self'; script-src 'self'; style-src 'self' 'unsafe-inline'"
    Header always set X-XSS-Protection "1; mode=block"
    Header always set X-Content-Type-Options "nosniff"
</Directory>