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VulnerabilityPublished Updated

CVE-2025-66209: coollabsio coolify · OS Command Injection

Affects coollabsio coolifySource CVE Database V5

0

Not known to be exploited · CVSS 10.0 Critical · fixed in 4.0.0 : patch coollabsio coolify as a priority.

Data as of 26 Oct 2026, 14:05 UTC

CVSS 3.1 base score
10.0Critical
How severe the flaw is on the 0–10 CVSS scale.
EPSS
3.8% chance of exploitation in 30 days – higher than 90% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 4.0.0
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 23 Dec 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
GitHubcoollabsio/coolifypkg:github/coollabsio/coolifyOther threatsAffected
  • =4.0.0-beta.451
Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

To mitigate CVE-2025-66209, organizations should immediately upgrade Coolify to version 4.0.0-beta.451 or later, where the vulnerability is patched. Until upgrade is possible, restrict application and service management permissions strictly to trusted administrators to reduce the risk of exploitation. Implement strong authentication mechanisms, including multi-factor authentication, to protect management accounts. Monitor logs and audit trails for unusual command execution or backup operations that could indicate exploitation attempts. Consider isolating Coolify-managed servers within segmented network zones to limit lateral movement if compromise occurs. Additionally, review and sanitize all user inputs related to database names or backup operations in any custom scripts or integrations. Employ runtime application self-protection (RASP) or endpoint detection and response (EDR) solutions to detect anomalous command execution patterns. Finally, maintain regular backups and incident response plans to recover quickly from potential breaches.

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.

References

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