CVE-2026-45408
Remote code execution via crafted app name in Dokku pre-receive hook (pre-0.38.2).
Is CVE-2026-45408 being exploited?
Not confirmed. CVE-2026-45408 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.42% probability of exploitation in the next 30 days.
How severe is CVE-2026-45408?
CVE-2026-45408 is rated Critical with a CVSS score of 9.0. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-45408?
Yes. A fix has been recorded for CVE-2026-45408. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-45408 affect?
CVE-2026-45408 affects Dokku <= 0.38.1. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-45408?
Upgrade to Dokku 0.38.2+
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Authenticated push can execute arbitrary commands as the dokku user via unquoted heredoc in a pre-receive hook.
Patch when possible
- affected< 0.38.2
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.