CVE-2026-103473

High

Description

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.

SeverityHigh

CVSS8.1

Exploit probability—

Product

Deno

PublishedSep 30, 2026

First seenSep 30, 2026

Weakness typeCWE-78OS command injection

How to fix

Patches

github.com/denoland/deno/pull/36772

Affected products

Product	Affected versions	Fixed in
denoland deno	2.7.0 ≤ v ≤ 2.9.7	—

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