What’s Vulnerable › Vulnerabilities

CVE-2021-42139

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.1% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-10-11 · updated 2026-06-17
• Weakness: CWE-94

Description

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

Affected products

• Deno Standard Modules: before 0.107.0 — fixed in 0.107.0

How to fix

Upgrade to a fixed version: Deno Standard Modules 0.107.0. Check the vendor advisory for mitigations.

References

• https://github.com/denoland/deno_std/pull/1275
• https://github.com/denoland/deno_std/releases/tag/0.107.0
• https://vuln.ryotak.me/advisories/58
• https://github.com/denoland/deno_std/pull/1275
• https://github.com/denoland/deno_std/releases/tag/0.107.0
• https://vuln.ryotak.me/advisories/58

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