CVE-2026-54636
Dokku: OS Command Injection via app.json managed Cron
Description
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.
INFO
Published Date :
June 26, 2026, 4:23 p.m.
Last Modified :
June 26, 2026, 4:23 p.m.
Remotely Exploit :
No
Source :
GitHub_M
Affected Products
The following products are affected by CVE-2026-54636
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
Solution
- Update Dokku to version 0.38.7.
- Ensure app.json cron commands are sanitized.
- Restrict shell access for cron commands.
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CVE-2026-54636 vulnerability anywhere in the article.