CVE-2021-42139
CVSS v3
9.8
CRITICAL
EPSS Score
2.1 %
exploit probability, as of 2026-09-25
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
Deno Standard Modules before 0.107.0 allows Code Injection via an untrusted YAML file in certain configurations.
Technical details
- Published
- 2021-10-11
Frequently asked questions
What is CVE-2021-42139?
Deno Standard Modules before 0.107.0 allows Code Injection via an untrusted YAML file in certain configurations.
Is CVE-2021-42139 actively exploited?
Active exploitation of CVE-2021-42139 has not been confirmed. Its EPSS score was 2.1% on 2026-09-25, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2021-42139?
CVE-2021-42139 has a CVSS v3 base score of 9.8 (CRITICAL severity).
Is CVE-2021-42139 affecting your environment?
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