OS Command Injection in Deno - CVE-2026-27190
Published: April 23, 2026
Vulnerability identifier: #VU127066
CSH Severity: High
CVSS v4: 9.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-27190
CWE-ID: CWE-78
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary commands.
The vulnerability exists due to improper neutralization of special elements used in an os command in node:child_process when invoking child processes with shell mode enabled using user-supplied input. A remote attacker can supply crafted input containing shell metacharacters to execute arbitrary commands.
Affected software
Deno
How to mitigate CVE-2026-27190
Install security update from vendor's website.
Deno - update to 2.6.8