CVE-2026-27190
Deno <= 2.6.7 vulnerable to node:child_process command injection.
Is CVE-2026-27190 being exploited?
Not confirmed. CVE-2026-27190 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 2.2% probability of exploitation in the next 30 days.
How severe is CVE-2026-27190?
CVE-2026-27190 is rated High with a CVSS score of 8.1. 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-2026-27190?
Yes. A fix has been recorded for CVE-2026-27190. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-27190 affect?
CVE-2026-27190 affects Deno <= 2.6.7. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-27190?
Upgrade to 2.6.8+ immediately
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Allows arbitrary command execution via crafted input in Deno's child_process usage, potentially leading to system compromise.
Immediate action required
- affected< 2.6.8
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.