Coolify: Command Injection via Unescaped Version String in Docker Build (CVE-2026-42148) | HOL Guard CVE

Low · CVSS 3.8CVE-2026-42148

Coolify: Command Injection via Unescaped Version String in Docker Build

Answer in brief

CVE-2026-42148 records a Low severity (CVSS 3.8) vulnerability in Coolify: Command Injection via Unescaped Version String in Docker Build. The current sources do not mark it as known exploited. The current feed maps coollabsio/coolify (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Jul 6, 2026Updated Jul 7, 2026Source checked Sep 19, 2026First seen by HOL Jul 6, 2026Material review Jul 7, 2026

Upstream Advisory

Key facts

Risk: Low · CVSS 3.8
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Not reported

Why this deserves its current priority

CVSS is 3.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps coollabsio/coolify (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
coollabsio/coolifygeneric	< 4.0.0-beta.474	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for coollabsio/coolify.
Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

Published upstream
Jul 6, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Jul 7, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Jul 6, 2026

Sources and claim methodology

Upstream source description

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.

Quoted source text, attributed separately from HOL analysis.