CVE-2026-103473

Deno versions 2.7.0 through 2.9.7 on Windows contain a command injection vulnerability in node:child_process where shell arguments are escaped for the wrong shell type. Attackers can inject OS commands by passing untrusted arguments with the shell option, allowing arbitrary command execution with Deno process privileges.

  • Published Sep 30, 2026
  • CVSS 9.2 critical
  • 1.5% chance of exploitation in the next 30 days (EPSS)

Affected software

CVE-2026-103473 at the National Vulnerability Database