RCE in Deno
CVE-2026-27190
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.
Vulnerability class: Command Injection (OS Command Injection)
EPSS: 0.022 (80.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Deno
- Denoland Deno — versions < 2.6.8
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Exploit, Vendor Advisory)
- security-advisories@github.com (Patch, x_refsource_MISC)
- security-advisories@github.com (Product, x_refsource_MISC, Release Notes)
Frequently asked questions
- What is CVE-2026-27190?
- CVE-2026-27190 is a high-severity vulnerability in Deno, classified under OS Command Injection. CVSS score: 8.1/10. Published 2026-02-20.
- How severe is CVE-2026-27190?
- High severity. CVSS v3 base score is 8.1 out of 10.