What is CVE-2026-34597?

CVE-2026-34597 is a high-severity vulnerability in Coollabsio Coolify, classified under OS Command Injection. CVSS score: 8.8/10. Published 2026-06-29.

How severe is CVE-2026-34597?

High severity. CVSS v3 base score is 8.8 out of 10.

RCE in Coollabsio Coolify

CVE-2026-34597

Coolify is an open-source and self-hostable tool for managing servers, applications, and databases. Prior to 4.0.0-beta.470, a critical Authenticated Host Remote Code Execution (RCE) vulnerability was discovered in Coolify. The flaw resides in the handling of user-defined build parameters for the Nixpacks build pack. Specifically, the install_command provided by a user is directly concatenated into a shell command string that is executed on the deployment host during the building phase. An attacker can leverage this to escape the intended build context and execute arbitrary commands with host-level privileges. This vulnerability is fixed in 4.0.0-beta.470.

Vulnerability class: Command Injection (OS Command Injection)

EPSS: 0.005 (41.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Coollabsio Coolify — versions < 4.0.0-beta.470

Weakness classification (CWE)

CWE-78 — OS Command Injection

References

security-advisories@github.com (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2026-34597?: CVE-2026-34597 is a high-severity vulnerability in Coollabsio Coolify, classified under OS Command Injection. CVSS score: 8.8/10. Published 2026-06-29.
How severe is CVE-2026-34597?: High severity. CVSS v3 base score is 8.8 out of 10.