CVE-2026-103473 Deno 2.7.0 through 2.9.7 Command Injection via node:child_process
Attackers can execute arbitrary OS commands on Windows by exploiting improper shell argument escaping in the node:child_process module.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-103473?
CVE-2026-103473 is a critical command injection vulnerability in denoland deno, published on 30 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-78
Which versions are affected by CVE-2026-103473?
How do I fix CVE-2026-103473?
No fix has been published for CVE-2026-103473 yet. Limit exposure of the affected software until one is available.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2026-103473 being exploited?
There is no known exploitation of CVE-2026-103473 in the wild and no public exploit code.
Sources
Also known as GHSA-m6mv-f8h2-2w86.