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.
{
"cwe_ids": [
"CWE-78"
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45408.json",
"cna_assigner": "GitHub_M"
}{
"cpe": "cpe:2.3:a:dokku:dokku:*:*:*:*:-:*:*:*",
"extracted_events": [
{
"introduced": "0"
},
{
"fixed": "0.38.2"
}
],
"source": [
"AFFECTED_FIELD",
"CPE_RANGE"
]
}