CVE-2026-27955

mediumCVSS 6.6covered by 1 sourcefirst seen 2026-06-30

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.

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Exploitation outlook

Low exploitation risk0.22% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 13% of all EPSS-scored CVEs.

Advisory coverage (1)

mediumCVE-2026-27955: Coolify is an open-source and self-hostable tool for managing servers, applications, and datab…nvd · 2026-06-30

External references

NVD record for CVE-2026-27955

CVE.org record

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