Vulnerability · Published Jul 7, 2026 · Assigned by GitHub_M

CVE-2026-42201Coolify: OS Command Injection via Database Credential Fields in Docker Compose Service Commands

Low 3.3

In plain English

A low-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 0.2% (higher than 15% of all known vulnerabilities).

Severity (CVSS 3.1)3.3Low

Exploit odds (30 days)0.2%top 84.9% 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. Prior to 4.0.0-beta.474, database credential fields (redis_password, keydb_password, dragonfly_password, clickhouse_admin_user, clickhouse_admin_password, postgres_user, mysql_user) are validated only as 'string' at the API layer, with zero shell-safety checks. These values are then interpolated directly into Docker Compose YAML command: strings without any escaping. This issue is fixed in version 4.0.0-beta.474.

Affected products (as reported)

Vendor	Product	Versions
coollabsio	coolify	< 4.0.0-beta.474

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

References

https://github.com/coollabsio/coolify/security/advisories/GHSA-f35h-g2c2-q36v x_refsource_CONFIRM
https://github.com/coollabsio/coolify/pull/9676 x_refsource_MISC
https://github.com/coollabsio/coolify/commit/bff6d853708f3d7c861279586f107739036e67da x_refsource_MISC
https://github.com/coollabsio/coolify/releases/tag/v4.0.0-beta.474 x_refsource_MISC