CVE-2025-63883
📋 TL;DR
A DOM-based XSS vulnerability in electic-shop v1.0 allows attackers to execute arbitrary JavaScript in victims' browsers by tricking them into opening malicious URLs. This affects all users of the vulnerable e-commerce software who visit attacker-controlled URLs. The vulnerability stems from unsafe DOM manipulation without proper input sanitization.
💻 Affected Systems
- electic-shop
⚠️ Risk & Real-World Impact
Worst Case
Attackers could steal session cookies, perform account takeover, redirect users to malicious sites, or deface the website by injecting malicious content.
Likely Case
Attackers would typically steal session cookies to hijack user accounts or redirect users to phishing pages to steal credentials.
If Mitigated
With proper input validation and output encoding, the vulnerability would be prevented, and impact would be limited to failed exploitation attempts.
🎯 Exploit Status
Exploitation requires user interaction (clicking a malicious link) but is straightforward for attackers to implement.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not available
Vendor Advisory: https://github.com/minhajultaivin/security-advisories/blob/main/CVE-2025-63883.md
Restart Required: No
Instructions:
1. Review the security advisory at the provided URL
2. Manually implement input validation and output encoding in client-side JavaScript
3. Replace unsafe DOM manipulation methods (innerHTML, insertAdjacentHTML, document.write) with safer alternatives
🔧 Temporary Workarounds
Implement Content Security Policy
allAdd a strict Content Security Policy header to prevent inline script execution
Add to web server configuration: Content-Security-Policy: script-src 'self'
Input Validation Filter
allAdd client-side input validation to sanitize URL parameters before DOM insertion
Implement JavaScript function to sanitize inputs using DOMPurify or similar library
🧯 If You Can't Patch
- Implement web application firewall (WAF) rules to detect and block XSS payloads in URLs
- Educate users about phishing risks and not clicking suspicious links
🔍 How to Verify
Check if Vulnerable:
Test by injecting a simple XSS payload in URL parameters and checking if it executes in the browserCheck Version:
Check the software version in the application interface or package.json fileVerify Fix Applied:
Verify that injected scripts no longer execute and that input is properly sanitized before DOM insertion📡 Detection & Monitoring
Log Indicators:
- Unusual URL parameters containing script tags or JavaScript code
- Multiple failed login attempts from same IP
Network Indicators:
- HTTP requests with suspicious parameters containing script tags or JavaScript functions
SIEM Query:
source="web_server" AND (url="*<script>*" OR url="*javascript:*" OR url="*onerror=*" OR url="*onload=*")