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How the CVE Works
The vulnerability exists in Ibexa DXP’s RichText Field Type (versions 4.6.0-beta1 to 4.6.20) due to improper input sanitization in the back office. Attackers with Editor or Administrator privileges can inject malicious JavaScript via RichText fields, which persists in the database. When front-end users load affected content, the script executes in their browser, enabling session hijacking, phishing, or malware delivery. The flaw stems from insufficient HTML escaping during content rendering, allowing crafted payloads to bypass filters.
DailyCVE Form:
Platform: Ibexa DXP
Version: 4.6.0-beta1 to 4.6.20
Vulnerability: Stored XSS
Severity: Moderate
Date: Jun 12, 2025
Prediction: Patch by Jun 20, 2025
What Undercode Say:
Exploitation:
1. Payload Injection:
<script>alert(document.cookie)</script>
Inserted via RichText editor in back office.
2. Persistence:
Malicious scripts save to DB and execute on front-end load.
3. Privilege Escalation:
Combine with CSRF to target admins.
Protection:
1. Patch:
composer require ibexa/fieldtype-richtext:4.6.21
2. WAF Rules:
location ~ .php$ {
modsecurity_rules 'SecRule ARGS "@detectXSS" deny";
}
3. Content Security Policy (CSP):
<meta http-equiv="Content-Security-Policy" content="default-src 'self'">
4. Manual Sanitization:
htmlspecialchars($userContent, ENT_QUOTES, 'UTF-8');
5. Log Monitoring:
grep -r "script>" /var/log/ibexa/
6. Database Cleanup:
UPDATE ezrichtext SET data = REGEXP_REPLACE(data, '<script.?>', '');
7. Exploit Detection:
import re
if re.search(r'<script[^>]>', payload):
raise SecurityException("XSS Detected")
8. Backup Verification:
mysqldump -u admin -p ibexa_db | grep -i "script"
9. Role-Based Mitigation:
Restrict RichText editing to trusted users only.
10. Headers Hardening:
Header set X-XSS-Protection "1; mode=block"
Sources:
Reported By: github.com
Extra Source Hub:
Undercode
