CVE-2026-27190

Deno has a Command Injection via Incomplete shell metacharacter blocklist in node:child_process

State: Published
Severity: 8.1 High
Published: Feb 20, 2026
Updated: Feb 24, 2026
Reserved: Feb 18, 2026

Description

Deno is a JavaScript, TypeScript, and WebAssembly runtime. Prior to 2.6.8, a command injection vulnerability exists in Deno's node:child_process implementation. This vulnerability is fixed in 2.6.8.

Scores

CVSS	Score	Vector	Source
3.1	8.1 High	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H	GitHub_M

Weaknesses

CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

Affected Products

Product	Versions
denodenoland	< 2.6.8Affected

References

https://github.com/denoland/deno/security/advisories/GHSA-hmh4-3xvx-q5hr
https://github.com/denoland/deno/commit/9132ad958c83a0d0b199de12b69b877f63edab4c
https://github.com/denoland/deno/releases/tag/v2.6.8

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