PT-2026-53891 · Coolify · Coolify

Published 2026-06-30 · Updated 2026-06-30 · CVE-2026-27955

Positive Technologies (AI Summary)

CVSS v3.1

6.6

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Coolify versions prior to 4.0.0-beta.464

Description An issue exists where the executeInDocker() helper wraps commands in bash -c '{$command}' without escaping single quotes. This allows user-controlled fields docker compose custom build command and docker compose custom start command to be interpolated directly, enabling an attacker to use a single quote to break out of the bash argument and execute arbitrary commands on the managed server host, bypassing the intended Docker container isolation.

Recommendations Update to version 4.0.0-beta.464.

Exploit

Fix

OS Command Injection

Weakness Enumeration

CWE-78

Related Identifiers

CVE-2026-27955

Affected Products

Coolify

References · 3

• 🔥 https://github.com/coollabsio/coolify/security/advisories/GHSA-6h8g-wpxp-cq98 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-27955 · Security Note
• https://twitter.com/VulmonFeeds/status/2071996927864979601 · Twitter Post