CVE-2024-3530 Overview
CVE-2024-3530 is a reflected cross-site scripting (XSS) vulnerability in Campcodes Complete Online Student Management System 1.0. The flaw resides in the Marks_view.php file, where the FirstRecord parameter is rendered without proper output encoding. Remote attackers can craft a malicious URL that executes arbitrary JavaScript in the victim's browser when clicked. The exploit has been publicly disclosed under identifier VDB-259900. This weakness maps to [CWE-79] Improper Neutralization of Input During Web Page Generation.
Critical Impact
Successful exploitation allows attackers to execute arbitrary script in the context of an authenticated user's session, enabling credential theft, session hijacking, or unauthorized administrative actions.
Affected Products
- Campcodes Complete Online Student Management System 1.0
- Marks_view.php component
- Deployments exposing the FirstRecord GET parameter
Discovery Timeline
- 2024-04-10 - CVE-2024-3530 published to NVD
- 2026-06-17 - Last updated in NVD database
Technical Details for CVE-2024-3530
Vulnerability Analysis
The vulnerability is a reflected cross-site scripting flaw in the Marks_view.php script. The application accepts the FirstRecord request parameter and echoes it back into the HTML response without sanitization or contextual encoding. An attacker who convinces a user to follow a crafted link can execute JavaScript in that user's browser session.
Because the affected page is part of an authenticated management workflow, injected script runs with the privileges of the logged-in user. This allows an attacker to exfiltrate session cookies, tamper with displayed grades, or invoke privileged actions on behalf of administrators. User interaction is required, and the attack scope changes because injected script executes in a different security context than the vulnerable endpoint itself.
Root Cause
The root cause is missing input validation and output encoding on the FirstRecord parameter within Marks_view.php. The parameter value flows directly from the HTTP request into an HTML sink without HTML entity encoding or allowlist filtering. This is a classic instance of [CWE-79].
Attack Vector
Exploitation is network-based and requires no authentication for the attacker to craft the payload, but the victim must click the malicious link. A typical payload embeds JavaScript inside the FirstRecord query string of a URL pointing to Marks_view.php. When the victim loads the URL, the server reflects the payload into the response and the browser executes it. Refer to the GitHub Vulnerability Report for the disclosed proof-of-concept details.
Detection Methods for CVE-2024-3530
Indicators of Compromise
- Web server access logs containing requests to Marks_view.php with FirstRecord values that include HTML tags such as <script>, <img, <svg, or event handlers like onerror= and onload=.
- URL-encoded XSS payloads in the FirstRecord parameter, for example %3Cscript%3E or %3Csvg.
- Unusual referrers or campaigns directing users to crafted Marks_view.php URLs.
Detection Strategies
- Deploy web application firewall (WAF) rules that inspect the FirstRecord parameter for script tags, event handlers, and JavaScript URI schemes.
- Correlate outbound browser telemetry with inbound reflected payloads to identify successful script execution.
- Review HTTP logs for anomalous query string length or entropy on the Marks_view.php endpoint.
Monitoring Recommendations
- Alert on any request to Marks_view.php originating from external referrers or unauthenticated sessions.
- Track authenticated administrator sessions for unexpected DOM changes or API calls following visits to Marks_view.php.
- Ingest web server logs into a centralized analytics platform and build detections for reflected XSS patterns.
How to Mitigate CVE-2024-3530
Immediate Actions Required
- Restrict access to Marks_view.php to trusted internal networks until a fix is applied.
- Deploy WAF signatures that block XSS payloads targeting the FirstRecord parameter.
- Educate administrators to avoid clicking untrusted links pointing to the student management portal.
Patch Information
No vendor patch is listed in the CVE record for Campcodes Complete Online Student Management System 1.0. Administrators should monitor the vendor site and the VulDB CVE Listing #259900 for updates. If no fix is released, consider migrating to a supported application.
Workarounds
- Modify Marks_view.php to HTML-encode the FirstRecord parameter before rendering, using functions such as htmlspecialchars($_GET['FirstRecord'], ENT_QUOTES, 'UTF-8').
- Apply strict input validation that limits FirstRecord to expected numeric or alphanumeric values.
- Enable a restrictive Content Security Policy (CSP) header that disallows inline script execution.
- Set the HttpOnly and Secure flags on session cookies to reduce the impact of a successful XSS.
# Example Apache configuration to add a Content Security Policy header
Header always set Content-Security-Policy "default-src 'self'; script-src 'self'; object-src 'none'; base-uri 'self'"
Header always set X-XSS-Protection "1; mode=block"
Header always set X-Content-Type-Options "nosniff"
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
