CVE-2025-66213
8.8 HIGH
📋 TL;DR
CVE-2025-66213 is an authenticated command injection vulnerability in Coolify's File Storage Directory Mount Path functionality. It allows users with application/service management permissions to execute arbitrary commands as root on managed servers by exploiting unsanitized input in the file_storage_directory_source parameter. This affects all Coolify instances prior to version 4.0.0-beta.451.
💻 Affected Systems
Products:
- Coolify
Versions: All versions prior to 4.0.0-beta.451
Operating Systems: Linux-based systems where Coolify is deployed
Default Config Vulnerable:
⚠️ Yes
Notes: Requires authenticated user with application/service management permissions. The vulnerability exists in the default configuration when using file storage directory functionality.
📦 What is this software?
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⚠️ Risk & Real-World Impact
Worst Case
Full root-level remote code execution on all managed servers, allowing complete system compromise, data exfiltration, lateral movement, and persistent backdoor installation.
Likely Case
Authenticated attackers with service management permissions gain root access on managed servers, enabling privilege escalation, data theft, and service disruption.
If Mitigated
Limited impact if proper network segmentation, least privilege access, and input validation are implemented, though risk remains for authorized users.
🌐 Internet-Facing: HIGH
🏢 Internal Only: HIGH
🎯 Exploit Status
Public PoC:
⚠️ Yes
Weaponized:
LIKELY
Unauthenticated Exploit:
✅ No
Complexity:
LOW
Exploitation requires authenticated access but is straightforward once authentication is obtained. Public proof-of-concept code is available in the referenced GitHub repository.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 4.0.0-beta.451
Vendor Advisory: https://github.com/coollabsio/coolify/security/advisories/GHSA-cj2c-9jx8-j427
Restart Required: Yes
Instructions:
1. Backup your Coolify configuration and data. 2. Update Coolify to version 4.0.0-beta.451 or later using the official upgrade process. 3. Restart the Coolify service. 4. Verify the update was successful by checking the version.
🔧 Temporary Workarounds
Disable File Storage Directory Mount Path functionality
linuxTemporarily disable the vulnerable file storage directory mount feature until patching can be completed.
# Modify Coolify configuration to remove or disable file_storage_directory_source parameter usage
# Check configuration files for file_storage_directory settings and comment them out
Restrict application/service management permissions
allLimit which users have permissions to manage applications/services to reduce attack surface.
# Review and modify user roles in Coolify admin interface
# Remove application/service management permissions from non-essential users
🧯 If You Can't Patch
- Implement strict network segmentation to isolate Coolify instances from critical systems
- Apply strict input validation and sanitization at the application layer for all user-supplied parameters
🔍 How to Verify
Check if Vulnerable:
Check if your Coolify version is below 4.0.0-beta.451. Review logs for suspicious file_storage_directory_source parameter values containing shell metacharacters.Check Version:
coolify --version or check the Coolify web interface admin panelVerify Fix Applied:
Confirm Coolify version is 4.0.0-beta.451 or later. Test the file storage directory functionality with malicious input to ensure it's properly sanitized.📡 Detection & Monitoring
Log Indicators:
- Unusual shell commands executed by Coolify process
- Suspicious file_storage_directory_source parameter values containing ;, |, &, $, or backticks
- Unexpected root-level process execution from Coolify context
Network Indicators:
- Unexpected outbound connections from Coolify server
- Suspicious SSH or reverse shell connections originating from Coolify host
SIEM Query:
process.name:coolify AND (command_line:*file_storage_directory* AND command_line:*[;&|`$]* )