Vulnerability · Published Jul 6, 2026 · Assigned by GitHub_M

CVE-2026-42204Coolify: Authenticated RCE via SHELL_SAFE_COMMAND_PATTERN regression → host root

High 8.8

In plain English

A high-severity OS command injection in coolify from coollabsio. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 40% of all known vulnerabilities).

Severity (CVSS 3.1)8.8High

Exploit odds (30 days)0.5%top 60.3% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

Coolify is an open-source and self-hostable tool for managing servers, applications, and databases. From 4.0.0-beta.471 through 4.0.0-beta.473, a regression in SHELL_SAFE_COMMAND_PATTERN allowed ampersands in custom Docker Compose build, start, and pre/post-deployment command fields, allowing an authenticated team member to inject shell commands that execute on the host. This issue is fixed in version 4.0.0-beta.474.

Affected products (as reported)

Vendor	Product	Versions
coollabsio	coolify	>= 4.0.0-beta.471, < 4.0.0-beta.474

Weakness: CWE-78 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References

https://github.com/coollabsio/coolify/security/advisories/GHSA-chg4-63hm-xv9x x_refsource_CONFIRM
https://github.com/coollabsio/coolify/pull/9684 x_refsource_MISC
https://github.com/coollabsio/coolify/commit/e1aac50b745cf499e710b7e35cd2a9d6a1538dd9 x_refsource_MISC
https://github.com/coollabsio/coolify/releases/tag/v4.0.0-beta.474 x_refsource_MISC