What is the CVSS score of CVE-2021-42139?

CVE-2021-42139 has a CVSS 3.1 base score of 9.8 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 2.0%.

Is there a public PoC exploit available for CVE-2021-42139?

Yes, a public proof-of-concept exploit is available for CVE-2021-42139. Prioritise patching immediately. EPSS: 2.0%.

Deno Standard Modules CVE-2021-42139

CRITICAL

Code Injection (CWE-94)

2021-10-11 cve@mitre.org

RCE Code Injection Deno Standard Modules

9.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

9.8 CRITICAL

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

CVE Published

Oct 11, 2021 - 05:15 nvd

CRITICAL 9.8

DescriptionNVD

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

AnalysisAI

Deno Standard Modules before 0.107.0 allows Code Injection via an untrusted YAML file in certain configurations. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified as Code Injection (CWE-94), which allows attackers to inject and execute arbitrary code within the application. Deno Standard Modules before 0.107.0 allows Code Injection via an untrusted YAML file in certain configurations. Affected products include: Deno Deno Standard Modules. Version information: before 0.107.0.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Never evaluate user-controlled input as code. Use sandboxing, disable dangerous functions, apply strict input validation.