CVE-2024-3320: Oretnom23 Elearning System XSS Vulnerability

CVE-2024-3320 Overview

CVE-2024-3320 is a reflected cross-site scripting (XSS) vulnerability in SourceCodester eLearning System 1.0, developed by oretnom23. The flaw exists in an unspecified component where the page request parameter is reflected into HTML output without proper sanitization or output encoding. Remote attackers can inject arbitrary JavaScript that executes in the browser of any user who follows a crafted link. The issue is tracked in VulDB as entry 259388 and is classified under CWE-79.

Critical Impact
Attackers can execute arbitrary JavaScript in victim browsers, enabling session hijacking, credential theft, and delivery of further payloads against authenticated eLearning System users.

Affected Products

SourceCodester eLearning System 1.0 (oretnom23)
CPE: cpe:2.3:a:oretnom23:elearning_system:1.0
Any deployment exposing the vulnerable page parameter to untrusted input

Discovery Timeline

2024-04-05 - CVE-2024-3320 published to NVD
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2024-3320

Vulnerability Analysis

The vulnerability is a reflected cross-site scripting flaw (CWE-79) in the eLearning System 1.0 application. The page GET parameter is embedded into rendered HTML without sufficient input validation or output encoding. When a victim loads a URL containing an attacker-crafted page value, the injected markup executes in the victim's browser session under the application's origin.

Exploitation requires user interaction, typically clicking a malicious link. The scope is changed because injected script executes in the trust context of the eLearning System origin, allowing access to cookies, DOM data, and authenticated actions available to the victim. Confidentiality and integrity impacts are limited to data accessible within that origin.

Root Cause

The application fails to sanitize or contextually encode the page parameter before including it in server-rendered HTML. Without HTML-entity encoding of special characters such as <, >, ", and ', attacker-supplied strings terminate surrounding HTML context and introduce active <script> content or event-handler attributes.

Attack Vector

An attacker crafts a URL to the vulnerable endpoint that embeds JavaScript in the page parameter, for example a payload delivered via phishing email, forum post, or third-party site. When an authenticated user visits the link, the browser executes the injected script. The script can exfiltrate the session cookie, submit forged requests against the learning platform, or render a fake login prompt to harvest credentials. Additional technical detail is available in the GitHub XSS vulnerability report and the VulDB entry 259388.

No public exploit code is tracked in Exploit-DB, and the vulnerability is not listed in the CISA Known Exploited Vulnerabilities catalog.

Detection Methods for CVE-2024-3320

Indicators of Compromise

Requests to eLearning System endpoints where the page query parameter contains HTML metacharacters such as <, >, ", or URL-encoded equivalents (%3C, %3E).
Web server access logs showing page= values containing strings like script, onerror, onload, javascript:, or alert(.
Unexpected outbound requests from user browsers to attacker-controlled domains shortly after visiting the application.
Session anomalies such as concurrent logins from different geographies for the same account.

Detection Strategies

Deploy web application firewall (WAF) rules that flag reflected script patterns in the page parameter of eLearning System requests.
Correlate HTTP referrers with anomalous JavaScript execution patterns observed in browser telemetry or endpoint EDR.
Hunt for phishing lures containing links to the eLearning System host with encoded payloads in query strings.

Monitoring Recommendations

Enable verbose logging on the eLearning System web server and forward logs to a central analytics platform for query-string inspection.
Alert on 200 responses to URLs where page values decode to HTML tags.
Monitor authenticated session behavior for actions that do not match user workflow, such as unexpected profile or credential changes.

How to Mitigate CVE-2024-3320

Immediate Actions Required

Restrict external access to the eLearning System 1.0 instance until a vendor fix is applied, using network ACLs or VPN gating.
Deploy WAF signatures that block reflected XSS patterns targeting the page parameter.
Rotate active session cookies and force re-authentication for all users to invalidate any tokens that may have been stolen.
Notify users of phishing risk and instruct them not to follow untrusted links to the platform.

Patch Information

No official vendor patch or advisory URL is published for CVE-2024-3320 at the time of writing. Operators should track the VulDB advisory and the SourceCodester project page for updates. Where feasible, apply source-level fixes: enforce server-side input validation on page, apply context-aware output encoding (HTML entity, attribute, and JavaScript encoding) before reflection, and set a strict Content-Security-Policy header that disallows inline scripts.

Workarounds

Add server-side filtering to reject any page value containing HTML metacharacters or non-alphanumeric characters outside an allowlist.
Configure a Content-Security-Policy response header such as default-src 'self'; script-src 'self' to block inline script execution.
Set HttpOnly and Secure flags on session cookies to reduce theft impact from script execution.
Use SameSite=Lax or Strict cookies to limit cross-site request forgery follow-on attacks.

bash

# Example nginx configuration adding CSP and cookie hardening
add_header Content-Security-Policy "default-src 'self'; script-src 'self'; object-src 'none'; base-uri 'self'" always;
add_header X-Content-Type-Options "nosniff" always;
add_header Referrer-Policy "no-referrer" always;

# Block obvious XSS payloads in the page parameter at the edge
if ($arg_page ~* "(<|%3C|script|onerror|onload|javascript:)") {
    return 403;
}