CVE-2026-45408 Details
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.
A command injection vulnerability has been identified in Dokku versions prior to 0.38.2. The issue arises from the app name validation regex, which allows shell metacharacters. When an authenticated user pushes to a git remote with a manipulated app name, the name is inserted unquoted into a bash pre-receive hook script using an unquoted heredoc. This allows the bash shell to interpret the semicolon as a command separator, enabling the execution of arbitrary commands as the dokku user.
Users can upgrade to Dokku version 0.38.2 or later to address this vulnerability.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Jun 26, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/dokku/dokku/pull/8590 | [email protected] | Issue TrackingPatch |
| https://github.com/dokku/dokku/security/advisories/GHSA-9x85-7gxq-fcr3 | [email protected] | Vendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-78 | Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| dokku dokku | < 0.38.2 |
CPE
Remediation
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Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 26, 2026 | CVE Modified | CISA-ADP |
| Jun 26, 2026 | Initial Analysis | [email protected] |
| Jun 26, 2026 | New CVE Received | [email protected] |