Vulnerability record · CVE-2026-34158 · published 7 July 2026

CVE-2026-34158: OS command injection vulnerability

Coolify is an open-source and self-hostable tool for managing servers, applications, and databases. Prior to 4.0.0-beta.469, the executeInDocker() helper wraps user-controlled commands in single quotes without escaping embedded single quotes. Attackers who can edit application settings can inject a single quote into docker_compose_custom_build_command or docker_compose_custom_start_command to break out of the quoted context and execute arbitrary commands on the managed server host during deployments, escaping the intended Docker container confinement. This issue is fixed in version 4.0.0-beta.469.

8.8 CVSS 3.1 High EPSS 0.65% · top 50.8% CWE-78 · OS command injection Deferred

8.8CVSS 3.1 base score

0.65%EPSS exploitation probability, 30 days

NoNot in CISA KEV

0Affected product versions listed by NVD

2References

7 Jul 2026Last modified by NVD

Description

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References

Link	Tags
https://github.com/coollabsio/coolify/security/advisories/GHSA-j6j2-frv3-g6f7
https://github.com/coollabsio/coolify/security/advisories/GHSA-j6j2-frv3-g6f7

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Source: NIST National Vulnerability Database (record CVE-2026-34158), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.