Command Injection Vulnerability in Coolify by Coollabs
CVE-2026-42204

8.8HIGH

Key Information:

Vendor

Coollabsio

Status
Coolify
Vendor
CVE Published:
6 July 2026

What is CVE-2026-42204?

Coolify, an open-source and self-hostable tool for application and server management, contains a vulnerability that permits authenticated users to exploit a regression in the SHELL_SAFE_COMMAND_PATTERN. Versions 4.0.0-beta.471 through 4.0.0-beta.473 are affected, allowing malicious actors to insert shell commands into custom Docker Compose commands. This could lead to the execution of arbitrary commands on the host, posing significant security risks. The issue has been addressed in version 4.0.0-beta.474, recommending all users to upgrade.

Affected Version(s)

coolify >= 4.0.0-beta.471, < 4.0.0-beta.474

References

https://github.com/coollabsio/coolify/security/advisories...
x_refsource_CONFIRM
https://github.com/coollabsio/coolify/pull/9684
x_refsource_MISC
https://github.com/coollabsio/coolify/commit/e1aac50b745c...
x_refsource_MISC

CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.