CVE-2026-27190: Deno has a Command Injection via Incomplete shell metacharacter blocklist in node:child_process

February 19, 2026 (updated February 20, 2026)

A command injection vulnerability exists in Deno’s node:child_process implementation.

References

github.com/advisories/GHSA-hmh4-3xvx-q5hr
github.com/denoland/deno
github.com/denoland/deno/commit/9132ad958c83a0d0b199de12b69b877f63edab4c
github.com/denoland/deno/releases/tag/v2.6.8
github.com/denoland/deno/security/advisories/GHSA-hmh4-3xvx-q5hr
nvd.nist.gov/vuln/detail/CVE-2026-27190

Code Behaviors & Features

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