TI-2026-39465 Aliases CVE-2026-54636

Dokku: OS Command Injection via app.json managed Cron

MEDIUM 43CWE-78Published 2026-06-26 · Updated 2026-06-29

Key facts

Attack vector: Network
Privileges required: Low
User interaction: None
Attack complexity: Low
Impact type: Code execution
Confidentiality · integrity · availability: High · High · High
Fix status: Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-78.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00529 45th percentileScored 2026-11-07

Fix Fixed dokku (dokku): 0.38.7

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
dokku	dokku	before 0.38.7	0.38.7	Patch available	CNA

dokku Vendordokku Affected before 0.38.7 Fixed in 0.38.7 Patch available CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:dokku:dokku:::::-:::*	before 0.38.7	Vulnerable	dokku

cpe:2.3:a:dokku:dokku:*:*:*:*:-:*:*:* Versions before 0.38.7 Vulnerable ·dokku

Remediation

Fix · CNA dokku (dokku) Fixed in 0.38.7

Timeline

2026-10-02 Threatist record created from CVE-2026-54636

References

Patch 1

https://github.com/dokku/dokku/pull/8672

Advisory 1

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

TI-2026-33197 Dokku: OS Command Injection via App Name in Git Pre-Receive Hook CVSS 3.1CRITICAL 9.0
TI-2026-33195 Dokku: Host RCE via Maliciously Named OpenResty Include Files Injected Through eval CVSS 3.1CRITICAL 9.0
TI-2026-33194 Dokku: Arbitrary File Write via Tar Symlink Traversal in git:from-archive and certs:add CVSS 3.1CRITICAL 9.0
TI-2026-33196 Dokku: Git Credentials in .netrc Stored World-Readable Due to Premature touch CVSS 3.1MEDIUM 5.5

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences