🛡️ CVE-2026-27955

🟡 CVSS 6.6 — Medium ✅ No Known Exploit CWE-78 NVD
6.6
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

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.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs administrative privileges on the target. No user interaction is required. The scope is changed, meaning a successful attack can affect components beyond the vulnerable one. Rated impact: confidentiality low, integrity low, availability low.

Weakness class

CVE-2026-27955 is classified as CWE-78: OS Command Injection. Untrusted input reaches a shell command without neutralisation, so an attacker can run arbitrary operating system commands.

Affected software

CVE-2026-27955 is recorded against 1 package.

  • unknown

Timeline and source

Published on 30 June 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

github.com
github.com

Details

Severity MEDIUM
CVSS Score 6.6
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:L
CWE CWE-78
Public Exploit ✅ No
Source NVD
Published 2026-06-30
Updated 2026-08-11
Modified 2026-06-30
Fix URL N/A

Affected Packages

Software From version Fixed in
unknown — —

Similar Threats

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