CVE-2024-3529: Campcodes Student Management System XSS Flaw

CVE-2024-3529 is a cross-site scripting vulnerability in Campcodes Online Student Management System affecting the students_view.php file. Attackers can exploit this remotely to inject malicious scripts. This article covers technical details, affected versions, security impact, and mitigation strategies.

CVE-2024-3529 Overview

CVE-2024-3529 is a reflected cross-site scripting (XSS) vulnerability in Campcodes Complete Online Student Management System 1.0. The flaw resides in students_view.php, where the FirstRecord parameter is rendered back to the client without proper sanitization or encoding. Remote attackers can craft malicious URLs that execute arbitrary JavaScript in the context of a victim's browser session. The issue is tracked as VDB-259899 and has been publicly disclosed, increasing the risk of opportunistic exploitation against exposed installations.

Critical Impact
Successful exploitation lets attackers hijack authenticated sessions, steal cookies, deface pages, or redirect administrators and students to attacker-controlled resources.

Affected Products

Campcodes Complete Online Student Management System 1.0
The vulnerable component is students_view.php
Impacted parameter: FirstRecord

Discovery Timeline

2024-04-10 - CVE-2024-3529 published to NVD
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2024-3529

Vulnerability Analysis

The vulnerability is a reflected cross-site scripting issue classified under [CWE-79]. The application accepts the FirstRecord GET parameter in students_view.php and echoes it into the HTML response without applying output encoding or input validation. An attacker who convinces an authenticated user to click a crafted link can execute arbitrary JavaScript in that user's browser under the origin of the vulnerable application.

Because the payload runs in the victim's session context, attackers can read the DOM, exfiltrate session cookies unless they are marked HttpOnly, submit requests on behalf of the user, or pivot to phishing pages that mimic the management portal. Administrator accounts are the most valuable target given their broader access to student records.

Root Cause

The root cause is missing input sanitization and output encoding on the FirstRecord query parameter. The value is reflected directly into rendered HTML, allowing HTML and script tokens to break out of their intended context. See the GitHub Vulnerability Report for the technical write-up.

Attack Vector

Exploitation is remote and requires user interaction. The attacker delivers a URL pointing to students_view.php with a crafted FirstRecord value containing JavaScript. When a signed-in user opens the link, the script executes in the browser and inherits the user's privileges within the application. No authentication is required to craft the URL, only to trigger the payload against a target user. Details are cataloged in VulDB #259899.

Detection Methods for CVE-2024-3529

Indicators of Compromise

HTTP requests to students_view.php where the FirstRecord parameter contains <script>, onerror=, javascript:, or URL-encoded equivalents such as %3Cscript%3E.
Web server logs showing referrers originating from external domains that direct users into students_view.php with unusual query strings.
Browser console errors or unexpected outbound requests to unknown domains observed after users load the students view page.

Detection Strategies

Deploy a web application firewall (WAF) rule to inspect the FirstRecord parameter for HTML tags, event handlers, and script tokens.
Enable server-side request logging with full query strings and alert on payload signatures associated with [CWE-79] reflected XSS.
Correlate suspicious URL clicks in email or messaging telemetry with subsequent access to the vulnerable endpoint.

Monitoring Recommendations

Monitor Content Security Policy (CSP) violation reports for inline script executions on pages served by the management system.
Track anomalous session activity such as new IPs, unusual navigation flows, or privilege changes shortly after users visit students_view.php.
Review authentication logs for administrator sessions that exhibit unexpected actions following a click on an external link.

How to Mitigate CVE-2024-3529

Immediate Actions Required

Restrict access to the Campcodes Online Student Management System behind a VPN or IP allowlist until a fix is applied.
Deploy WAF rules to block or sanitize requests containing script tokens in the FirstRecord parameter.
Force session invalidation for administrator accounts and require re-authentication if suspicious activity is observed.

Patch Information

No vendor patch is referenced in the NVD entry or vendor advisories at the time of publication. Operators should monitor the Campcodes product channels and the VulDB submission record for updates and apply any released fix immediately.

Workarounds

Apply server-side input validation that rejects non-numeric values for FirstRecord if the parameter is intended to be an integer offset.
Implement contextual output encoding (HTML entity encoding) for any reflected user input in students_view.php.
Enforce a strict Content Security Policy that disallows inline scripts and restricts script sources to trusted origins.
Set the HttpOnly and Secure flags on session cookies to reduce the impact of successful script execution.

bash

# Example ModSecurity rule to block script-like payloads in FirstRecord
SecRule ARGS:FirstRecord "@rx (?i)(<script|onerror=|javascript:|%3Cscript)" \
    "id:1004829,phase:2,deny,status:403,log,msg:'CVE-2024-3529 Reflected XSS attempt in FirstRecord'"