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CVE-2025-66209

Coollabs Coolify remote code execution

9.9 CRITICALPublic exploitEPSS 3.88%
  1. Published23 Dec 2025

Description

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.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredLow
User interactionNone
ScopeChanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Affected products

Coollabs Coolify< 4.0.0 · 4.0.0

Remediation

Fixed in
Coollabs Coolify≥ 4.0.0

References

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Frequently asked

Is CVE-2025-66209 being actively exploited?

CVE-2025-66209 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 3.88%.

How severe is CVE-2025-66209?

CVE-2025-66209 has a CVSS 3.1 base score of 9.9, rated critical. EPSS estimates a 3.88% probability of exploitation.

Which products are affected by CVE-2025-66209?

Affected products include Coollabs Coolify.

How do I fix CVE-2025-66209?

Upgrade affected software to a fixed version, for example Coollabs Coolify 4.0.0 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2025-66209 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.