Auth bypass in Coollabs Coolify
CVE-2025-64421
Coolify is an open-source and self-hostable tool for managing servers, applications, and databases. In Coolify versions up to and including v4.0.0-beta.434, a low privileged user (member) can invite a high privileged user. At first, the application will throw an error, but if the attacker clicks the invite button a second time, it actually works. This way, a low privileged user can invite themselves as an administrator to the Coolify instance. After the high privileged user is invited, the attacker can initiate a password reset and log in with the new admin. As of time of publication, it is unclear if a patch is available.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.0 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.003 (21.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 21st percentile — 21.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: +0.000
Affected products
- Coollabs Coolify — versions 4.0.0
- Coollabsio Coolify — versions <= 4.0.0-beta.434
Weakness classification (CWE)
References
- github.com/coollabsio/coolify/security/advisories/GHSA-4p6r-m39m-9cm9 (Exploit, Vendor Advisory)
- drive.google.com/file/d/1YZHFgiZv_k9p9909A63DAErsTsh8K1rc/view (Exploit)
Frequently asked questions
- What is CVE-2025-64421?
- CVE-2025-64421 is a high-severity vulnerability in Coollabs Coolify, classified under Incorrect Authorization. CVSS score: 8.0/10. Published 2026-01-05.
- How severe is CVE-2025-64421?
- High severity. CVSS v3 base score is 8.0 out of 10.