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.

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