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Vulnerability record · CVE-2026-84694 · published 2 September 2026

CVE-2026-84694: OS command injection vulnerability

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.

8.7 CVSS 4.0 High EPSS 0.85% · top 43.7% CWE-78 · OS command injection Deferred
8.7CVSS 4.0 base score
0.85%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
6References
10 Sep 2026Last modified by NVD

Description

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.

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

LinkTags
https://github.com/coollabsio/coolify
https://github.com/coollabsio/coolify/blob/v4.1.2/app/Policies/ApplicationPolicy.php
https://github.com/coollabsio/coolify/blob/v4.1.2/app/Support/ValidationPatterns.php
https://github.com/coollabsio/coolify/commit/b50839d4515b115b7ded5db609471440249995da
https://github.com/coollabsio/coolify/releases/tag/v4.2.0
https://www.vulncheck.com/advisories/coolify-before-4.2.0-remote-code-execution-via-environment-variable-key

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Source: NIST National Vulnerability Database (record CVE-2026-84694), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.