CVE-2025-15109
📋 TL;DR
This vulnerability allows remote attackers to upload arbitrary files to jackq XCMS systems due to insufficient validation in the upload.php component. This affects all deployments using XCMS up to commit 3fab5342cc509945a7ce1b8ec39d19f701b89261. Attackers can exploit this to upload malicious files including web shells.
💻 Affected Systems
- jackq XCMS
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise through web shell upload leading to data theft, ransomware deployment, or persistent backdoor installation.
Likely Case
Unauthorized file upload leading to defacement, data exfiltration, or limited server-side code execution.
If Mitigated
Upload attempts are blocked or logged, preventing successful exploitation while maintaining system integrity.
🎯 Exploit Status
Exploit details published in issue tracker; remote unauthenticated attack possible via HTTP requests.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: None available
Restart Required: No
Instructions:
No official patch available. Vendor has been notified but not responded. Consider removing or securing the vulnerable file.
🔧 Temporary Workarounds
Remove vulnerable file
linuxDelete or restrict access to the vulnerable upload.php file
rm -f Public/javascripts/admin/plupload-2.1.2/examples/upload.php
Implement file upload restrictions
allAdd server-side validation for file uploads including file type checking and size limits
🧯 If You Can't Patch
- Implement WAF rules to block suspicious file upload patterns
- Restrict network access to XCMS admin interface using firewall rules
🔍 How to Verify
Check if Vulnerable:
Check if file exists: Public/javascripts/admin/plupload-2.1.2/examples/upload.phpCheck Version:
git log --oneline -1Verify Fix Applied:
Verify file is removed or modified with proper upload validation📡 Detection & Monitoring
Log Indicators:
- Unusual file uploads to upload.php
- POST requests with executable file extensions
- Large number of upload attempts
Network Indicators:
- HTTP POST requests to /Public/javascripts/admin/plupload-2.1.2/examples/upload.php
- Uploads of suspicious file types
SIEM Query:
source="web_access.log" AND uri="*upload.php" AND (file_extension="php" OR file_extension="jsp" OR file_extension="asp")