Listen to this Post
How the CVE Works
CVE-2025-45755 is a critical Stored XSS vulnerability in Vtiger CRM Open Source Edition v8.3.0. The flaw arises from improper input sanitization in the Services Import feature. Attackers craft a malicious CSV file with a JavaScript payload embedded in the Service Name field. Upon uploading the file, the payload persists in the database and executes when an administrator views the imported services. This allows session hijacking, phishing, or privilege escalation. The attack requires no authentication if the victim has import privileges.
DailyCVE Form
Platform: Vtiger CRM
Version: 8.3.0
Vulnerability: Stored XSS
Severity: Critical
Date: 06/10/2025
Prediction: Patch by 07/15/2025
What Undercode Say:
Exploitation
1. Craft Malicious CSV:
Service Name,Description <script>alert(document.cookie)</script>,Legit Description
2. Upload via Services Import:
curl -F "[email protected]" -H "Cookie: SESSIONID=xxx" http://target/vtiger/service/import
3. Trigger Payload: Admin views services list, executing the script.
Detection
- Manual Review: Check `modules/Services/actions/Import.php` for lacking
htmlspecialchars(). - Automated Scan:
nuclei -t xss.yaml -u https://target/vtiger -tags "vtiger,cve-2025-45755"
Mitigation
1. Temporary Fix: Disable Services Import via `.htaccess`:
RewriteRule ^vtiger/service/import - [bash]
2. Input Sanitization Patch:
// In modules/Services/actions/Import.php $serviceName = htmlspecialchars($_POST['name'], ENT_QUOTES, 'UTF-8');
3. WAF Rule:
location ~ /vtiger/service/import {
if ($args ~ "<script") { return 403; }
}
Post-Exploit Analysis
- Log Review:
grep "POST /vtiger/service/import" /var/log/apache2/access.log | grep -i ".csv"
- Database Cleanup:
UPDATE vtiger_service SET servicename = REGEXP_REPLACE(servicename, '<script.?>.?</script>', '');
References
- MITRE CVE-2025-45755
- Vtiger Security Advisory (Pending)
No further commentary beyond provided instructions.
Sources:
Reported By: nvd.nist.gov
Extra Source Hub:
Undercode
