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

Quick assessment

Affected
dokku dokku
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Dokku Dokku是Dokku团队的一个云平台部署工具。 Dokku 0.38.7之前版本存在命令注入漏洞，该漏洞源于cron plugin利用app.json文件中的命令来管理系统cron任务，使用特殊shell字符的命令可能突破Docker容器并在主机上以Dokku用户身份执行命令，可能导致执行任意代码。

CVSS 9.0 · Critical EPSS 0.53% · P43

Affected Version Matrix 1

VendorProduct Version RangeStatus
dokku dokku < 0.38.7 affected
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I. Basic Information for CVE-2026-54636

Vulnerability Information
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Vulnerability Title
Dokku: OS Command Injection via app.json managed Cron
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
OS命令中使用的特殊元素转义处理不恰当(OS命令注入)
Source: CVE Program / CVE List V5
Vulnerability Title
Dokku 命令注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Dokku Dokku是Dokku团队的一个云平台部署工具。 Dokku 0.38.7之前版本存在命令注入漏洞，该漏洞源于cron plugin利用app.json文件中的命令来管理系统cron任务，使用特殊shell字符的命令可能突破Docker容器并在主机上以Dokku用户身份执行命令，可能导致执行任意代码。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
dokku dokku < 0.38.7 -

II. Public POCs for CVE-2026-54636

# POC Description Source Link Shenlong Link
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Qwen3.6-35B-A3B · 7706 chars
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III. Intelligence Information for CVE-2026-54636

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Patches & Fixes for CVE-2026-54636 (1)

Vendor Advisories for CVE-2026-54636 (1)

Same Patch Batch · dokku · 2026-06-26 · 5 CVEs total

CVE-2026-45408 9.0 CRITICAL Dokku: OS Command Injection via App Name in Git Pre-Receive Hook
CVE-2026-45405 9.0 CRITICAL Dokku: Arbitrary File Write via Tar Symlink Traversal in git:from-archive and certs:add
CVE-2026-45406 9.0 CRITICAL Dokku: Host RCE via Maliciously Named OpenResty Include Files Injected Through eval
CVE-2026-45407 5.0 MEDIUM Dokku: Git Credentials in .netrc Stored World-Readable Due to Premature touch

IV. Related Vulnerabilities

Same product: dokku
Same vendor: dokku
Same weakness: CWE-78

V. Comments for CVE-2026-54636

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