CVE-2026-27955
Coolify: Command Injection via Single-Quote Breakout in `executeInDocker()`
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.
INFO
Published Date :
June 30, 2026, 3:16 p.m.
Last Modified :
June 30, 2026, 7:58 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Update Coolify to version 4.0.0-beta.464 or later.
- Review and sanitize user inputs for commands.
- Avoid direct interpolation of user input into shell commands.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-27955.
| URL | Resource |
|---|---|
| https://github.com/coollabsio/coolify/security/advisories/GHSA-6h8g-wpxp-cq98 | |
| https://github.com/coollabsio/coolify/security/advisories/GHSA-6h8g-wpxp-cq98 |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-27955 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-27955
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-27955 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-27955 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 30, 2026
Action Type Old Value New Value Added Reference https://github.com/coollabsio/coolify/security/advisories/GHSA-6h8g-wpxp-cq98 Added SSVC {'id': 'CVE-2026-27955', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'poc'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-06-30T15:00:56.216890Z'} -
New CVE Received by [email protected]
Jun. 30, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'coollabsio', 'product': 'coolify', 'versions': [{'status': 'affected', 'version': '< 4.0.0-beta.464'}]}] Added 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. Added CVSS V3.1 AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:L Added CWE CWE-78 Added Reference https://github.com/coollabsio/coolify/security/advisories/GHSA-6h8g-wpxp-cq98