RCE in Coollabs Coolify
CVE-2025-66209
Coolify is an open-source and self-hostable tool for managing servers, applications, and databases. Prior to version 4.0.0-beta.451, an authenticated command injection vulnerability in the Database Backup functionality allows users with application/service management permissions to execute arbitrary commands as root on managed servers. Database names used in backup operations are passed directly to shell commands without sanitization, enabling full remote code execution. Version 4.0.0-beta.451 fixes the issue.
Vulnerability class: Command Injection (OS Command Injection)
EPSS: 0.039 (89.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.9 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.
Affected products
- Coollabs Coolify — versions 4.0.0
- Coollabsio Coolify — versions < 4.0.0-beta.451
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security-advisories@github.com (x_refsource_CONFIRM, Exploit, Vendor Advisory)
- security-advisories@github.com (Patch, x_refsource_MISC, Issue Tracking)
- security-advisories@github.com (Exploit, Third Party Advisory, x_refsource_MISC)
- security-advisories@github.com (x_refsource_MISC, Release Notes)
Frequently asked questions
- What is CVE-2025-66209?
- CVE-2025-66209 is a critical-severity vulnerability in Coollabs Coolify, classified under OS Command Injection. CVSS score: 9.9/10. Published 2025-12-23.
- How severe is CVE-2025-66209?
- Critical severity. CVSS v3 base score is 9.9 out of 10.
- Is CVE-2025-66209 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.