CVE-2026-45408 | Dokku is a docker-powered PaaS. Prior to 0.38.2, the app nam… | CVSS 9.0 CRITICAL

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.

Metadata

CVE ID: CVE-2026-45408
State: PUBLISHED
Assigner: GitHub_M
Reserved: 2026-05-12 01:48 UTC
Published: 2026-06-26 16:19 UTC
Last updated: 2026-06-26 18:41 UTC
Primary CWE: CWE-78
CWE-78: Improper Neutralization of Special Elements used in …
Vendor / Product: dokku / dokku
Sources: cve.org · NVD

Severity & Metrics

9.0 CRITICAL CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H

SSVC — CISA Coordinator

Exploitation: none
Automatable: no
Tech. Impact: total

Affected products (1)

Vendor	Product	Platform	Versions
dokku	dokku	—	< 0.38.2

Weakness (CWE)

CWE	Source	Description
CWE-78	cna	CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

CVSS scores (1)

Score	Severity	Version	Source	Vector
9.0	CRITICAL	3.1	cna	CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H

References (2)

https://github.com/dokku/dokku/security/advisories/GHSA-9x85-7gxq-fcr3 https://github.com/dokku/dokku/security/advisories/GHSA-9x85-7gxq-fcr3
https://github.com/dokku/dokku/pull/8590 https://github.com/dokku/dokku/pull/8590