by Kastro
Paper/Archive/CVE-2026-45408

CVE-2026-45408

dokku dokku — Dokku: OS Command Injection via App Name in Git Pre-Receive Hook

EPSS 0.4%CVSS 9.0
critical.is priorityof 100
34
CVSS 9.0 (CNA)9.0 / 10 × 3027.0Not in CISA KEV+300.0EPSS percentile 36.2.362 × 207.2No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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

ProductAffectedFixed inSource
dokku< 0.38.2–CNA

Scores by source

GitHub_M (CNA)9.0CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: total

References

refgithub.com/dokku/dokku/security/advisories/GHSA-9x85-7gxq-fcr3refgithub.com/dokku/dokku/pull/8590