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CVE-2026-45408— Dokku: OS Command Injection via App Name in Git Pre-Receive Hook

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 0.38.2之前版本存在命令注入漏洞，该漏洞源于应用名称验证正则表达式允许shell元字符，且应用名称在fn-git-create-hook()函数中被未引用嵌入到bash pre-receive hook脚本，可能导致经过身份验证的用户推送包含特制应用名称的git远程仓库时，bash将分号解释为命令分隔符，从而以dokku用户身份执行任意命令。

CVSS 9.0 · Critical EPSS 0.42% · P34

Affected Version Matrix 1

VendorProduct Version RangeStatus
dokku dokku < 0.38.2 affected
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I. Basic Information for CVE-2026-45408

Vulnerability Information
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Vulnerability Title
Dokku: OS Command Injection via App Name in Git Pre-Receive Hook
Source: CVE Program / CVE List V5
Vulnerability Description
Dokku is a docker-powered PaaS. Prior to 0.38.2, the app name validation regex (^[a-z0-9][^/:_A-Z]*$) permits shell metacharacters. When an authenticated user pushes to a git remote with a crafted app name, the name is embedded unquoted into a bash pre-receive hook script via an unquoted heredoc (<<EOF instead of <<'EOF') in fn-git-create-hook() at plugins/git/internal-functions:378. On git push, bash interprets the semicolon as a command separator, executing arbitrary commands as the dokku user. This vulnerability is fixed in 0.38.2.
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 0.38.2之前版本存在命令注入漏洞，该漏洞源于应用名称验证正则表达式允许shell元字符，且应用名称在fn-git-create-hook()函数中被未引用嵌入到bash pre-receive hook脚本，可能导致经过身份验证的用户推送包含特制应用名称的git远程仓库时，bash将分号解释为命令分隔符，从而以dokku用户身份执行任意命令。
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 < 0.38.2 -

II. Public POCs for CVE-2026-45408

# POC Description Source Link Shenlong Link
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Qwen3.6-35B-A3B · 8282 chars
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III. Intelligence Information for CVE-2026-45408

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Patches & Fixes for CVE-2026-45408 (1)

Vendor Advisories for CVE-2026-45408 (1)

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

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-2026-54636 9.0 CRITICAL Dokku: OS Command Injection via app.json managed Cron
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-2026-45408

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