What is CVE-2026-42148?

CVE-2026-42148 is a low-severity vulnerability in Coollabsio Coolify, classified under OS Command Injection. CVSS score: 3.8/10. Published 2026-07-06.

How severe is CVE-2026-42148?

Low severity. CVSS v3 base score is 3.8 out of 10.

RCE in Coollabsio Coolify

CVE-2026-42148

Coolify is an open-source and self-hostable tool for managing servers, applications, and databases. Prior to 4.0.0-beta.474, the buildHelperImage method in app/Livewire/Settings/Index.php constructs a Docker build command using the dev_helper_version field without shell escaping, allowing an attacker who can set the helper version and trigger the helper image build in a development environment to execute arbitrary commands on the server. This issue is fixed in version 4.0.0-beta.474.

Vulnerability class: Command Injection (OS Command Injection)

EPSS: 0.001 (2.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 3.8 (Low). Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:L/I:L/A:L.

Affected products

Coollabsio Coolify — versions < 4.0.0-beta.474

Weakness classification (CWE)

CWE-78 — OS Command Injection

References

security-advisories@github.com (x_refsource_CONFIRM)
security-advisories@github.com (x_refsource_MISC)
security-advisories@github.com (x_refsource_MISC)

Frequently asked questions

What is CVE-2026-42148?: CVE-2026-42148 is a low-severity vulnerability in Coollabsio Coolify, classified under OS Command Injection. CVSS score: 3.8/10. Published 2026-07-06.
How severe is CVE-2026-42148?: Low severity. CVSS v3 base score is 3.8 out of 10.