Cyber Resilience

CVE-2026-54636

CriticalRCE

Published: 26 June 2026

Published
26 June 2026
Modified
29 June 2026
KEV Added
—
Patch
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CVSS Score v3.1 9.0 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
EPSS Score 0.0027 19.2th percentile
Risk Priority 70 floored blend · peak EPSS

Summary

CVE-2026-54636 is a critical-severity OS Command Injection (CWE-78) vulnerability in Dokku Dokku. Its CVSS base score is 9.0 (Critical).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 19.2th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

OWASP Top 10 for Web (2025)

A05:2025 Injection

EU & UK References

Vulnerability details

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,…

more

> 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.

CWE(s)
CWE-78

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
attack.mitre.org →
T1059.004 Unix Shell Execution
Adversaries may abuse Unix shell commands and scripts for execution.
attack.mitre.org →
Why these techniques?

CWE-78 OS command injection in cron plugin allows shell metacharacters in app.json to escape container and execute on host; directly enables T1190 against public PaaS and T1059.004 Unix shell execution.

Confidence: HIGH · MITRE ATT&CK Enterprise v19.0

CVEs Like This One

CVE-2026-30861Shared CWE-78
CVE-2024-57016Shared CWE-78
CVE-2026-27728Shared CWE-78
CVE-2025-8613Shared CWE-78
CVE-2026-27626Shared CWE-78
CVE-2025-2257Shared CWE-78
CVE-2026-33208Shared CWE-78
CVE-2026-32892Shared CWE-78
CVE-2026-2043Shared CWE-78
CVE-2013-10048Shared CWE-78

Affected Assets

dokku
dokku
≤ 0.38.7

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

SC-27 Platform-independent Applications
addresses: CWE-78

Platform-independent apps typically execute inside a managed runtime or sandbox that restricts direct OS command execution, reducing the ability to exploit OS command injection.

SI-10 Information Input Validation
addresses: CWE-78

Validates inputs to block special elements that would alter OS command execution.

References