CVE-2023-54349: AmazCart CMS Reflected XSS Vulnerability

CVE-2023-54349 Overview

CVE-2023-54349 is a reflected cross-site scripting (XSS) vulnerability in AmazCart CMS 3.4, a Laravel-based ecommerce platform distributed through CodeCanyon. Unauthenticated attackers can inject arbitrary JavaScript by submitting crafted payloads through the application's search functionality. The injected script executes in a victim's browser when the search history is viewed or when search results are rendered. The flaw is tracked under CWE-79: Improper Neutralization of Input During Web Page Generation.

Critical Impact

Attackers can execute arbitrary JavaScript in the context of authenticated AmazCart sessions, enabling session theft, account takeover, and client-side data exfiltration through a single crafted search request.

Affected Products

• AmazCart CMS version 3.4
• AmazCart Laravel Ecommerce System (CodeCanyon item 34962179)
• Spondon IT AmazCart deployments running the affected release

Discovery Timeline

• 2026-05-05 - CVE-2023-54349 published to NVD
• 2026-05-05 - Last updated in NVD database

Technical Details for CVE-2023-54349

Vulnerability Analysis

The vulnerability resides in the search input handler of AmazCart CMS 3.4. User-supplied search terms are reflected back into rendered HTML without proper output encoding or input sanitization. An attacker can submit <script> tags or event-handler payloads through the search box and have them executed in the browser of any user who later views the response page or the stored search history.

The attack does not require authentication. The CVSS 4.0 vector indicates network-reachable exploitation with passive user interaction (UI:A), confidentiality and integrity impact limited to the subsequent system (SC:L/SI:L), reflecting the standard impact profile of reflected XSS against browser sessions.

Root Cause

The root cause is missing contextual output encoding when search query parameters are echoed into HTML response bodies. AmazCart CMS 3.4 fails to apply Laravel's Blade {{ }} escaping or equivalent HTML entity encoding before rendering the search term. Untrusted input flows directly into the DOM, allowing the browser to parse attacker-supplied markup as executable script.

Attack Vector

Exploitation requires an attacker to deliver a crafted URL containing the malicious search payload to a victim, typically through phishing, a malicious link on another site, or an embedded iframe. When the victim loads the URL, the AmazCart server reflects the payload into the search results page and the browser executes the embedded JavaScript. Public proof-of-concept material is documented in Exploit-DB entry 51219 and the VulnCheck advisory on AmazCart.

The vulnerability manifests when the search parameter is rendered without escaping. See the referenced advisories for full payload details.

Detection Methods for CVE-2023-54349

Indicators of Compromise

• HTTP GET or POST requests to AmazCart search endpoints containing <script>, onerror=, onload=, or javascript: substrings in query parameters.
• Web server access logs showing URL-encoded angle brackets (%3Cscript%3E) submitted to the search route.
• Outbound browser requests from authenticated users to attacker-controlled domains shortly after viewing search pages.

Detection Strategies

• Deploy a Web Application Firewall (WAF) rule set such as the OWASP Core Rule Set to flag XSS signatures in search query parameters.
• Inspect application logs for reflected payload patterns and correlate with referrer headers originating outside the AmazCart domain.
• Use Content Security Policy (CSP) violation reports to identify unexpected inline script execution attempts on AmazCart pages.

Monitoring Recommendations

• Alert on anomalous search query lengths or non-printable characters in the AmazCart q, search, or equivalent parameter.
• Monitor for spikes in 200-status responses to the search endpoint paired with suspicious user-agent or referrer values.
• Track authenticated session activity for unusual cross-origin requests immediately following access to search result pages.

How to Mitigate CVE-2023-54349

Immediate Actions Required

• Restrict access to the AmazCart search functionality behind authentication or rate limiting until a vendor patch is verified.
• Deploy WAF signatures that block common XSS payloads against the search route as a compensating control.
• Notify administrators and customers to avoid clicking AmazCart search links received from untrusted sources.

Patch Information

No official vendor advisory or patched version is referenced in the NVD record at the time of publication. Operators should monitor the CodeCanyon AmazCart product listing and Spondon IT for updates beyond version 3.4 that address the search-parameter encoding flaw.

Workarounds

• Apply HTML entity encoding to all user-supplied search input before rendering, using Laravel Blade {{ $query }} syntax instead of {!! $query !!}.
• Implement 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 limit the impact of successful script execution.
• Add server-side input validation that rejects search queries containing HTML metacharacters when not required for legitimate use.

# Example nginx WAF-style block for reflected XSS payloads in AmazCart search
location /search {
    if ($args ~* "(<script|javascript:|onerror=|onload=|%3Cscript)") {
        return 403;
    }
    proxy_pass http://amazcart_backend;
}