CVE-2026-27955

Coolify is an open-source and self-hostable tool for managing servers, applications, and databases. Prior to 4.0.0-beta.464, the executeInDocker() helper wraps commands in bash -c '{$command}' without escaping single quotes. User-controlled docker_compose_custom_build_command and docker_compose_custom_start_command fields are interpolated directly, allowing a single quote to break out of the bash -c argument and execute commands on the managed server host (outside the intended Docker container context). This vulnerability is fixed in 4.0.0-beta.464.

• CWE-78

• https://github.com/coollabsio/coolify/security/advisories/GHSA-6h8g-wpxp-cq98
• https://github.com/coollabsio/coolify/security/advisories/GHSA-6h8g-wpxp-cq98

Published

Jun 30, 2026

Last Modified

Oct 25, 2026

Status

Deferred

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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