Vulnerability · Published Jun 26, 2026 · Assigned by GitHub_M

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

Critical 9.0

In plain English

A critical-severity OS command injection in dokku from dokku. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 45% of all known vulnerabilities).

Severity (CVSS 3.1)9.0Critical

Exploit odds (30 days)0.5%top 55.1% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
dokku	dokku	< 0.38.7

Weakness: CWE-78 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H

References

https://github.com/dokku/dokku/security/advisories/GHSA-72vm-7pc2-x95w x_refsource_CONFIRM
https://github.com/dokku/dokku/pull/8672 x_refsource_MISC