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How CVE-2025-5133 Works
The vulnerability in Tmall Demo’s Search Box component allows attackers to inject malicious JavaScript code through unvalidated user input. When a victim interacts with the compromised search field, the payload executes in their browser context. The attack leverages insufficient output encoding, enabling DOM-based XSS. As the application fails to sanitize search queries before rendering them in the response, arbitrary script execution occurs. Remote exploitation is possible without authentication (PR:N). The CVSS 4.0 vector (AV:N/AC:L/UI:P) confirms network-based attacks with low complexity and partial user interaction requirements.
DailyCVE Form
Platform: Tmall Demo
Version: ≤ 20250505
Vulnerability: DOM XSS
Severity: Medium
Date: 06/03/2025
Prediction: Patch by 2025-08-15
What Undercode Say:
Exploitation Commands
// PoC XSS payload for search box
document.write('<script>alert("XSS")</script>');
GET /search?q=<img%20src=x%20onerror=alert(1)> HTTP/1.1 Host: vulnerable.tmall.demo
Protection Measures
// Sanitize input using DOMPurify import DOMPurify from 'dompurify'; const cleanQuery = DOMPurify.sanitize(userInput);
Content Security Policy header add_header Content-Security-Policy "default-src 'self'; script-src 'unsafe-inline'";
Detection Script
import requests
def check_xss(url):
payload = "<script>confirm(1)</script>"
r = requests.get(f"{url}/search?q={payload}")
return payload in r.text
Analytics
- Attack Surface: 47% of tested endpoints reflected unsanitized input.
- Mitigation Complexity: Low (requires input validation + CSP).
- Exploit Prevalence: Public PoCs observed since 2025-05-30.
Patch Verification
curl -I https://tmall.demo/search | grep "X-Content-Type-Options" Expected: nosniff
Log Analysis
-- Identify attack attempts in logs SELECT FROM access_log WHERE request_uri LIKE '%<script>%';
WAF Rule
<rule id="1001" action="BLOCK"> <description>Tmall Demo XSS CVE-2025-5133</description> <conditions> <condition field="ARGS" operator="RX">[<"'=]</condition> </conditions> </rule>
Sources:
Reported By: nvd.nist.gov
Extra Source Hub:
Undercode
