What’s Vulnerable › Vulnerabilities

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

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.5% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-02-20 · updated 2026-06-17
• Weakness: CWE-78

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.

Affected products

• denoland deno: before 2.6.8 — fixed in 2.6.8

How to fix

Upgrade to a fixed version: denoland deno 2.6.8. Check the vendor advisory for mitigations.

References

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

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