CVE-2026-34158
HighCVSS 8.8Exploitation Probability (EPSS)
Low risk28th percentile - higher than 28% of all known CVEs
Summary
Coolify prior to version 4.0.0-beta.469 has a vulnerability in the executeInDocker() helper that 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.
Risk Assessment
The risk for the organization includes full compromise of the managed server, potentially leading to data theft, malware installation, or further attacks on the infrastructure.
Recommendation
Immediately upgrade Coolify to version 4.0.0-beta.469 or later, which contains the fix for this vulnerability.
Original NVD description (English source)
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.