CVE-2026-45408

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.

CVSS v3 9.0 CRITICAL

9.0^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 2.3 / Impact : 6.0

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope CHANGED

References

Link	Resource
https://github.com/dokku/dokku/pull/8590	Issue Tracking Patch
https://github.com/dokku/dokku/security/advisories/GHSA-9x85-7gxq-fcr3	Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:dokku:dokku:*:*:*:*:-:*:*:*

History

26 Jun 2026, 18:55

Type	Values Removed	Values Added
References	~~() https://github.com/dokku/dokku/pull/8590 -~~	() https://github.com/dokku/dokku/pull/8590 - Issue Tracking, Patch
References	~~() https://github.com/dokku/dokku/security/advisories/GHSA-9x85-7gxq-fcr3 -~~	() https://github.com/dokku/dokku/security/advisories/GHSA-9x85-7gxq-fcr3 - Vendor Advisory
First Time		Dokku dokku Dokku
CPE		cpe:2.3:a:dokku:dokku:::::-:::*

26 Jun 2026, 17:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-06-26 17:16

Updated : 2026-06-26 19:16

NVD link : CVE-2026-45408

Mitre link : CVE-2026-45408

CVE.ORG link : CVE-2026-45408

JSON object : View

Products Affected

dokku

dokku

CWE

CWE-78

Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

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