CVE-2021-42139: Deno Standard Modules

Critical severity, CVSS 9.8. EPSS: 2.1% chance of exploitation in the next 30 days.

Deno Standard Modules before 0.107.0 allows Code Injection via an untrusted YAML file in certain configurations.

Affected products

• Deno Deno Standard Modules: before 0.107.0 (fixed in 0.107.0)

Published 2021-10-11. Last modified 2026-06-17.