What is CVE-2026-34034?

CVE-2026-34034 is a high-severity vulnerability in Coollabsio Coolify, classified under OS Command Injection. CVSS score: 8.8/10. Published 2026-07-07.

How severe is CVE-2026-34034?

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

RCE in Coollabsio Coolify

CVE-2026-34034

Coolify is an open-source and self-hostable tool for managing servers, applications, and databases. Prior to 4.0.0-beta.466, the sentinel_token setting is used in shell commands without sufficient validation, allowing an authenticated user with access to server Sentinel settings to inject shell syntax and execute commands on the host when Sentinel is restarted. This issue is fixed in version 4.0.0-beta.466.

Vulnerability class: Command Injection (OS Command Injection)

EPSS: 0.004 (33.7th 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.466

Weakness classification (CWE)

CWE-78 — OS Command Injection

References

security-advisories@github.com (x_refsource_CONFIRM)
security-advisories@github.com (x_refsource_MISC)
security-advisories@github.com (x_refsource_MISC)

Frequently asked questions

What is CVE-2026-34034?: CVE-2026-34034 is a high-severity vulnerability in Coollabsio Coolify, classified under OS Command Injection. CVSS score: 8.8/10. Published 2026-07-07.
How severe is CVE-2026-34034?: High severity. CVSS v3 base score is 8.8 out of 10.