RCE in Coollabsio Coolify
CVE-2026-84694
Coolify before 4.2.0 fails to properly escape environment variable key names in Docker commands executed over SSH on managed servers. Authenticated attackers can inject shell metacharacters into environment variable keys to execute arbitrary commands on the server host outside containers.
Vulnerability class: Command Injection (OS Command Injection)
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.008 (57.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 57th percentile — 57.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.008 · change: +0.004
Affected products
Weakness classification (CWE)
References
- github.com/coollabsio/coolify (product)
- github.com/coollabsio/coolify/blob/v4.1.2/app/Policies/ApplicationPolicy.php (technical-description)
- github.com/coollabsio/coolify/blob/v4.1.2/app/Support/ValidationPatterns.php (technical-description)
- github.com/coollabsio/coolify/commit/b50839d4515b115b7ded5db609471440249995da (patch)
- github.com/coollabsio/coolify/releases/tag/v4.2.0 (release-notes)
- www.vulncheck.com/advisories/coolify-before-4.2.0-remote-code-execution-via-env… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-84694?
- CVE-2026-84694 is a high-severity vulnerability in Coollabsio Coolify, classified under OS Command Injection. CVSS score: 8.8/10. Published 2026-09-02.
- How severe is CVE-2026-84694?
- High severity. CVSS v3 base score is 8.8 out of 10.