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How CVE-2025-5153 Works
This vulnerability in CMS Made Simple 2.2.21 allows stored XSS via the Design Manager Module’s Description parameter. Attackers inject malicious JavaScript payloads into the description field, which executes when an admin views the affected module. Since no proper input sanitization exists, the payload persists in the database, leading to session hijacking or admin account compromise. The attack requires low privileges (contributor-level access) but relies on tricking admins into triggering the payload.
DailyCVE Form
Platform: CMS Made Simple
Version: 2.2.21
Vulnerability: Stored XSS
Severity: Medium
Date: 06/03/2025
Prediction: Patch by 08/2025
What Undercode Say:
Analytics
- Exploitability: Low (requires social engineering)
- Attack Vector: Remote
- Privilege Escalation: Possible via admin session theft
Exploit Command
curl -X POST "http://target/cms/admin/moduleinterface.php" \ --data "mact=DesignManager,m1_,save_description,0" \ --data "m1_description=<script>alert(document.cookie)</script>" \ --cookie "PHPSESSID=attacker_session"
Protection Commands
1. Input Sanitization (PHP):
$description = htmlspecialchars($_POST['description'], ENT_QUOTES, 'UTF-8');
2. WAF Rule (ModSecurity):
SecRule ARGS:description "@contains <script>" "id:1001,deny,msg:'XSS Attempt'"
Detection Code (Python)
import requests
response = requests.get("http://target/cms/admin/moduleinterface.php")
if "<script>" in response.text:
print("XSS payload detected!")
Mitigation Steps
1. Disable Design Manager for untrusted users.
2. Apply CSP headers:
Content-Security-Policy: default-src 'self'; script-src 'unsafe-inline'
3. Patch via vendor update (when released).
Log Analysis
SELECT FROM cms_log WHERE request LIKE "%m1_description=%" AND timestamp > "2025-05-01";
Exploit Impact
- Cookie theft → Admin account takeover.
- Defacement via injected HTML.
- CSRF token leakage.
Post-Exploit Cleanup
UPDATE cms_module_descriptions SET description = REPLACE(description, '<script>', '');
Sources:
Reported By: nvd.nist.gov
Extra Source Hub:
Undercode
