CVE-2026-54636: 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 ut
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.
Details
Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-54636
Exploitation outlook
EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.
- Low exploitation riskCVE-2026-546360.27% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 19% of all scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-54636 | coverage & exploitation status | NVD · CVE.org |
Recent advisories for Dokku is a
A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.
- criticalCVE-2026-45408: Dokku is a docker-powered PaaS. Prior to 0.38.2, the app name validation regex (^[a-z0-9][^/:_…nvd · 2026-06-26
- mediumCVE-2026-45407: Dokku is a docker-powered PaaS. Prior to 0.38.2, the git:auth command creates $DOKKU_ROOT/.net…nvd · 2026-06-26
- criticalCVE-2026-45406: Dokku is a docker-powered PaaS. Prior to 0.38.2, the openresty-vhosts plugin copies files from…nvd · 2026-06-26
- criticalCVE-2026-45405: Dokku is a docker-powered PaaS. Prior to 0.38.2, the git:from-archive and certs:add commands e…nvd · 2026-06-26
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