CVE-2026-23796
📋 TL;DR
Quick.Cart e-commerce software has a session fixation vulnerability where an attacker can set a victim's session ID before authentication, then hijack that session after the victim logs in. This affects all Quick.Cart installations, particularly those exposed to the internet. Attackers can gain unauthorized access to user accounts and administrative functions.
💻 Affected Systems
- Quick.Cart e-commerce software
📦 What is this software?
Quick.cart by Opensolution
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of administrator accounts leading to data theft, financial fraud, and website defacement.
Likely Case
Unauthorized access to customer accounts for credential harvesting, personal data theft, and fraudulent purchases.
If Mitigated
Limited impact with proper session management controls and monitoring in place.
🎯 Exploit Status
Attack requires tricking victim into using attacker-provided session ID, typically via phishing or malicious links.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: None available
Restart Required: No
Instructions:
No official patch available. Consider upgrading to latest version if vendor releases fix, or implement workarounds.
🔧 Temporary Workarounds
Implement Session Regeneration
allModify Quick.Cart to regenerate session ID after successful authentication
Modify authentication code to call session_regenerate_id(true) after login
Add Session Validation
allImplement checks to ensure session IDs are not accepted from unauthenticated sources
Add session validation logic in authentication flow
🧯 If You Can't Patch
- Implement web application firewall (WAF) rules to detect session fixation attempts
- Enable detailed session logging and monitor for suspicious session activity
🔍 How to Verify
Check if Vulnerable:
Test if session ID remains unchanged after authentication by capturing session cookie before and after loginCheck Version:
Check Quick.Cart version in admin panel or configuration filesVerify Fix Applied:
Verify that session ID changes after successful authentication📡 Detection & Monitoring
Log Indicators:
- Multiple login attempts with same session ID
- Session IDs being set before authentication
- Unusual session activity patterns
Network Indicators:
- HTTP requests with session parameters in URLs
- Suspicious referrer headers containing session IDs
SIEM Query:
source="web_logs" AND (session_id="*" AND event="login") | stats count by session_id | where count > 1