CVE-2025-63543
📋 TL;DR
TechStore 1.0 contains a reflected cross-site scripting vulnerability in its search functionality. Attackers can inject malicious scripts via the search query parameter, which are then executed in victims' browsers when they view search results. This affects all users accessing the vulnerable TechStore 1.0 web application.
💻 Affected Systems
- TechStore
📦 What is this software?
Techstore by Nooncarlett
⚠️ Risk & Real-World Impact
Worst Case
Attackers could steal session cookies, perform actions as authenticated users, redirect to malicious sites, or install malware on user systems.
Likely Case
Session hijacking, credential theft, or defacement of search results pages through script injection.
If Mitigated
Minimal impact with proper input validation, output encoding, and Content Security Policy headers in place.
🎯 Exploit Status
Proof of concept available in GitHub gist. Simple reflected XSS that requires user to click malicious link or visit crafted search page.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: None available
Restart Required: No
Instructions:
No official patch available. Implement input validation and output encoding in the search_results.php file.
🔧 Temporary Workarounds
Input Validation Filter
allAdd server-side validation to sanitize search query parameter
Modify search_results.php to filter q parameter using htmlspecialchars() or similar function
Content Security Policy
allImplement CSP headers to restrict script execution
Add header: Content-Security-Policy: default-src 'self'; script-src 'self'
🧯 If You Can't Patch
- Implement WAF rules to block XSS patterns in query parameters
- Disable the search functionality if not critical to operations
🔍 How to Verify
Check if Vulnerable:
Test by accessing /search_results?q=<script>alert('XSS')</script> and checking if script executesCheck Version:
Check TechStore version in admin panel or about pageVerify Fix Applied:
Test same payload after fixes; script should be displayed as text, not executed📡 Detection & Monitoring
Log Indicators:
- Unusual long search queries containing script tags or JavaScript patterns
- Multiple failed search attempts with encoded payloads
Network Indicators:
- HTTP requests to /search_results with suspicious query parameters
- Outbound connections to external domains from search pages
SIEM Query:
source="web_logs" AND uri_path="/search_results" AND (query_string CONTAINS "<script>" OR query_string CONTAINS "javascript:")