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CVE-2026-54636

Dokku command injection

9.0 CRITICALEPSS 0.53%
  1. Published26 Jun 2026

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.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredLow
User interactionRequired
ScopeChanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H

Affected products

Dokku< 0.38.7

Remediation

Fixed in
Dokku≥ 0.38.7

References

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Frequently asked

Is CVE-2026-54636 being actively exploited?

CVE-2026-54636 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.53%.

How severe is CVE-2026-54636?

CVE-2026-54636 has a CVSS 3.1 base score of 9.0, rated critical. EPSS estimates a 0.53% probability of exploitation.

Which products are affected by CVE-2026-54636?

Affected products include Dokku.

How do I fix CVE-2026-54636?

Upgrade affected software to a fixed version, for example Dokku 0.38.7 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.