What is CVE-2025-64420?

CVE-2025-64420 is a critical-severity vulnerability in Coollabs Coolify, classified under Insufficiently Protected Credentials. CVSS score: 9.9/10. Published 2026-01-05.

How severe is CVE-2025-64420?

Critical severity. CVSS v3 base score is 9.9 out of 10.

Vulnerability in Coollabs Coolify

CVE-2025-64420

Coolify is an open-source and self-hostable tool for managing servers, applications, and databases. In Coolify versions prior to and including v4.0.0-beta.434, low privileged users are able to see the private key of the root user on the Coolify instance. This allows them to ssh to the server and authenticate as root user, using the private key. As of time of publication, it is unclear if a patch is available.

EPSS: 0.005 (41.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.9 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.

Affected products

Coollabs Coolify — versions 4.0.0
Coollabsio Coolify — versions <= 4.0.0-beta.434

Weakness classification (CWE)

CWE-522 — Insufficiently Protected Credentials

References

security-advisories@github.com (x_refsource_CONFIRM, Exploit, Vendor Advisory)

Frequently asked questions

What is CVE-2025-64420?: CVE-2025-64420 is a critical-severity vulnerability in Coollabs Coolify, classified under Insufficiently Protected Credentials. CVSS score: 9.9/10. Published 2026-01-05.
How severe is CVE-2025-64420?: Critical severity. CVSS v3 base score is 9.9 out of 10.