Critical severity · published Feb 20, 2026
CVE-2026-27190
Deno has a Command Injection via Incomplete shell metacharacter blocklist in node:child_process
9.8
CVSS
2.5%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)2.5% · higher than 84% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DE
deno · denoland
< 2.6.8 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-27190
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-27190
Patch
https://github.com/denoland/deno/commit/9132ad958c83a0d0b199de12b69b877f63edab4c
Product
https://github.com/denoland/deno/releases/tag/v2.6.8
Exploit
https://github.com/denoland/deno/security/advisories/GHSA-hmh4-3xvx-q5hr
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