Shell Command Injection in Dokku Docker-Powered PaaS
CVE-2026-45408

9CRITICAL

Key Information:

Vendor

Dokku

Status
Dokku
Vendor
CVE Published:
26 June 2026

What is CVE-2026-45408?

Dokku, a docker-powered Platform as a Service (PaaS), contains a vulnerability in its app name validation regex before version 0.38.2, allowing the inclusion of shell metacharacters. When an authenticated user pushes a crafted app name to a git remote, it is embedded unquoted in a bash pre-receive hook script. This exploitation leads to bash interpreting the semicolon as a command separator, enabling the execution of arbitrary commands with the privileges of the dokku user, potentially compromising the deployment.

Affected Version(s)

dokku < 0.38.2

References

https://github.com/dokku/dokku/security/advisories/GHSA-9...
x_refsource_CONFIRM
https://github.com/dokku/dokku/pull/8590
x_refsource_MISC

CVSS V3.1

Score:
9
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
Required
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.