CVE-2026-23498
📋 TL;DR
This CVE describes a code injection vulnerability in Shopware's map() function where PHP Closures can bypass allow-list validation. It affects Shopware installations from version 6.7.0.0 to before 6.7.6.1, potentially allowing attackers to execute arbitrary code on vulnerable systems.
💻 Affected Systems
- Shopware
📦 What is this software?
Shopware by Shopware
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to complete system compromise, data theft, or ransomware deployment.
Likely Case
Server-side code injection allowing data manipulation, privilege escalation, or backdoor installation.
If Mitigated
Limited impact with proper input validation and security controls in place.
🎯 Exploit Status
Exploitation requires crafting specific PHP Closure arrays to bypass allow-list validation.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 6.7.6.1
Vendor Advisory: https://github.com/shopware/shopware/security/advisories/GHSA-7cw6-7h3h-v8pf
Restart Required: No
Instructions:
1. Backup your Shopware installation and database. 2. Update to Shopware 6.7.6.1 or later via Composer: composer require shopware/core:6.7.6.1. 3. Clear cache: bin/console cache:clear. 4. Run database migrations: bin/console database:migrate --all.
🔧 Temporary Workarounds
Input Validation Enhancement
allAdd additional input validation for map() function parameters
Not applicable - requires code modification
🧯 If You Can't Patch
- Implement strict WAF rules to block suspicious PHP Closure patterns
- Restrict access to vulnerable endpoints using network segmentation
🔍 How to Verify
Check if Vulnerable:
Check Shopware version via admin panel or composer.json fileCheck Version:
composer show shopware/core | grep versionVerify Fix Applied:
Confirm version is 6.7.6.1 or later and test map() function with test inputs📡 Detection & Monitoring
Log Indicators:
- Unusual PHP Closure patterns in request logs
- Multiple failed map() function calls
Network Indicators:
- HTTP requests with crafted array parameters to Shopware endpoints
SIEM Query:
source="shopware_logs" AND ("map()" OR "Closure") AND status="500"