CVE-2026-54636 CRITICAL

CVE-2026-54636: Dokku: OS Command Injection via app.json managed Cron

Vendor Dokku
Product dokku
Weakness CWE-78
Published June 26, 2026
Last update June 29, 2026

CVSS base score

9.0/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction Required
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H

What the vulnerability does

01Description

Dokku is a docker-powered PaaS. Prior to 0.38.7, the cron plugin utilizes commands in the app.json file to manage system cron running as the Dokku user. An app.json cron command utilizing special shell characters - including, but not limited to, > or ; - can break out of the Docker container and execute commands on the host as the Dokku user. This vulnerability is fixed in 0.38.7.

Key dates

02Disclosure timeline

June 26, 2026 CVE published
June 29, 2026 Record updated