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
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.
Details
Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-27955
Exploitation outlook
EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.
- Low exploitation riskCVE-2026-279550.22% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 13% of all scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-27955 | coverage & exploitation status | NVD · CVE.org |
Recent advisories for Coolify is an
A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.
- high[NEW] [high] Coolify: Multiple vulnerabilitiescert-bund · 2026-07-10
- highCVE-2026-59734: Coolify is an open-source and self-hostable tool for managing servers, applications, and datab…nvd · 2026-07-09
- high[NEW] [high] Coolify: Vulnerability allows code execution and disclosurecert-bund · 2026-07-07
- lowCVE-2026-42201: Coolify is an open-source and self-hostable tool for managing servers, applications, and datab…nvd · 2026-07-07
- highCVE-2026-34158: Coolify is an open-source and self-hostable tool for managing servers, applications, and datab…nvd · 2026-07-07
- highCVE-2026-42200: Coolify is an open-source and self-hostable tool for managing servers, applications, and datab…nvd · 2026-07-07
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