CVE-2026-45406
CriticalCVSS 9.0Exploitation Probability (EPSS)
Low risk19th percentile — higher than 19% of all known CVEs
Summary
Dokku before version 0.38.2 contains a vulnerability in the openresty-vhosts plugin that allows arbitrary command execution on the host as the dokku user. The issue stems from improper interpolation of filenames from the app's openresty/http-includes/ git repository directory into a single-quoted shell string that is later parsed by eval. A filename containing a single quote breaks the quoting and allows command substitution.
Risk Assessment
An attacker can execute arbitrary commands on the host as the dokku user during the next app deployment, potentially leading to full compromise of the platform and data.
Recommendation
Immediately update Dokku to version 0.38.2 or later, which contains a fix for this vulnerability.
Original NVD description (English source)
Dokku is a docker-powered PaaS. Prior to 0.38.2, the openresty-vhosts plugin copies files from an app's openresty/http-includes/ git repository directory to the host and then interpolates their filenames, unescaped, into a single-quoted shell string that is later parsed by eval. A filename containing a single quote breaks the quoting and allows command substitution to execute arbitrary commands on the host as the dokku user during the app's next deploy. This vulnerability is fixed in 0.38.2.