What is the CVSS score of CVE-2026-27955?

CVE-2026-27955 has a CVSS 3.1 base score of 6.6 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:L. EPSS exploitation probability: 0.2%.

Is there a patch available for CVE-2026-27955?

Yes, a patch is available for CVE-2026-27955. Update the affected software to the latest version immediately.

Docker CVE-2026-27955

EUVD-2026-40332 MEDIUM

OS Command Injection (CWE-78)

2026-06-30 GitHub_M

Command Injection Docker Coolify

6.6

CVSS 3.1 · Vendor: GitHub_M

Severity by source

Vendor (GitHub_M) PRIMARY

6.6 MEDIUM

AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:L

vuln.today AI

9.1 CRITICAL

PR:H reflects mandatory admin access; C/I/A raised to H because container escape enables full arbitrary code execution on the managed host.

3.1 AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

4.0 AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:L/SC:H/SI:H/SA:H

Primary rating from Vendor (GitHub_M).

CVSS VectorVendor: GitHub_M

Attack Vector

Network

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

Low

Lifecycle Timeline

Patch available

Jun 30, 2026 - 16:01 EUVD

Analysis Generated

Jun 30, 2026 - 15:23 vuln.today

DescriptionCVE.org

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.

AnalysisAI

Command injection in Coolify prior to 4.0.0-beta.464 allows authenticated administrators to escape the Docker container and execute arbitrary commands on the host server. The vulnerability originates from the executeInDocker() helper that wraps commands in bash -c '{$command}' without escaping single quotes, enabling injection via user-controlled Docker compose fields. A proof-of-concept exploit exists, but no active exploitation is reported (EPSS 0.22%, low risk).