Vulnerability · Published Jun 26, 2026 · Assigned by GitHub_M

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

Critical 9.0

In plain English

A critical-severity OS command injection in dokku from dokku. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 36% of all known vulnerabilities).

Severity (CVSS 3.1)9.0Critical

Exploit odds (30 days)0.4%top 63.6% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
dokku	dokku	< 0.38.2

Weakness: CWE-78 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H

References

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