CVE-2024-3541 Overview
CVE-2024-3541 is a reflected cross-site scripting (XSS) vulnerability in Campcodes Church Management System 1.0. The flaw resides in /admin/admin_user.php, where the firstname parameter is rendered without proper output encoding. An unauthenticated attacker can craft a malicious URL that, when opened by an administrator, executes arbitrary JavaScript in the victim's browser session. The issue is tracked as VulDB entry VDB-259911 and mapped to [CWE-79]. The exploit details have been publicly disclosed, increasing the likelihood of opportunistic attacks against exposed installations.
Critical Impact
Successful exploitation allows an attacker to run arbitrary script in an administrator's browser, enabling session hijacking, credential theft, and unauthorized administrative actions within the Church Management System.
Affected Products
- Campcodes Church Management System 1.0
- Affected file: /admin/admin_user.php
- Affected parameter: firstname
Discovery Timeline
- 2024-04-10 - CVE-2024-3541 published to NVD
- 2026-06-17 - Last updated in NVD database
Technical Details for CVE-2024-3541
Vulnerability Analysis
The vulnerability is a reflected cross-site scripting weakness in the administrative user management page of Campcodes Church Management System 1.0. The firstname request argument passed to /admin/admin_user.php is echoed back into the HTML response without sanitization or contextual output encoding. An attacker who lures an authenticated administrator into visiting a crafted URL can execute JavaScript in the administrator's browser context. Because the payload runs with the administrator's session, the attacker can perform any action the administrator can, including creating new privileged users, exfiltrating stored data, or pivoting deeper into the application. The exploit requires user interaction but no authentication or elevated privileges from the attacker.
Root Cause
The root cause is missing input validation and output encoding on the firstname parameter in /admin/admin_user.php. User-controlled input is written directly into the HTML response, allowing HTML and script tags to break out of their intended context. This is a textbook [CWE-79] Improper Neutralization of Input During Web Page Generation defect.
Attack Vector
The attack is network-based and reflected. An attacker constructs a URL containing a JavaScript payload in the firstname parameter and delivers it via phishing, chat, or a malicious web page. When an administrator visits the link while authenticated to the Church Management System, the injected script executes in the browser and can access cookies, tokens, and the DOM of the admin interface. Because the vulnerable path lives under /admin/, exploitation is most impactful against users with administrative sessions.
Detection Methods for CVE-2024-3541
Indicators of Compromise
- HTTP requests to /admin/admin_user.php containing script tags, event handlers such as onerror=, onload=, or JavaScript URI schemes within the firstname parameter.
- Unexpected outbound requests from administrator browsers to attacker-controlled domains shortly after visiting the admin panel.
- New or modified administrator accounts within the Church Management System with no corresponding change-management record.
Detection Strategies
- Inspect web server access logs for encoded and unencoded XSS payloads targeting the firstname parameter of admin_user.php.
- Deploy web application firewall (WAF) rules that flag common XSS patterns in query strings and POST bodies destined for administrative endpoints.
- Correlate suspicious admin panel requests with subsequent privileged actions such as user creation or role changes.
Monitoring Recommendations
- Enable full HTTP request logging for /admin/ paths and forward logs to a centralized analytics platform for retention and search.
- Alert on browser-side Content Security Policy (CSP) violation reports originating from the admin interface.
- Monitor for repeated failed or unusual requests from a single source IP targeting the vulnerable parameter.
How to Mitigate CVE-2024-3541
Immediate Actions Required
- Restrict access to /admin/ paths to trusted IP ranges or a VPN until a fix is applied.
- Instruct administrators to avoid clicking untrusted links while authenticated to the Church Management System.
- Deploy a WAF rule to block requests to /admin/admin_user.php that contain HTML or script metacharacters in the firstname parameter.
Patch Information
No vendor patch has been published in the referenced advisories for Campcodes Church Management System 1.0. Consult the GitHub Vulnerability Report and VulDB CVE Analysis #259911 for the most current status, and consider applying local source code fixes that HTML-encode the firstname value before rendering.
Workarounds
- Apply server-side input validation to reject non-alphabetic characters in the firstname field.
- Implement contextual output encoding, for example htmlspecialchars($firstname, ENT_QUOTES, 'UTF-8'), before echoing user input.
- Enforce a strict Content Security Policy that disallows inline scripts on administrative pages.
- If the application is not actively used, take it offline until a maintained alternative or vendor fix is available.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.