Vulnerability · Published Sep 30, 2026 · Assigned by VulnCheck
CVE-2026-103473Deno 2.7.0 through 2.9.7 Command Injection via node:child_process
High 8.1
In plain English
A high-severity OS command injection in deno from denoland. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.5% (higher than 74% of all known vulnerabilities).
Severity (CVSS 3.1)8.1High
Exploit odds (30 days)1.5%top 26.1% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
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.
Affected products (as reported)
Weakness: CWE-78 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
References
- Pull Request #36772 issue-tracking, patch
- https://github.com/denoland/deno product
- https://github.com/denoland/deno/blob/0c071246a412575e07423263404a5d13e7ed6aa2/ext/node/polyfills/internal/child_process.ts#L1499 technical-description
- https://github.com/denoland/deno/blob/0c071246a412575e07423263404a5d13e7ed6aa2/ext/node/polyfills/internal/child_process.ts#L1339 technical-description
- VulnCheck Advisory: Deno 2.7.0 through 2.9.7 Command Injection via node:child_process third-party-advisory