7.5

CVSS Score

3.1

-

CVSS Score

Basic Information

CVE ID

CVE-2023-39619

GHSA ID

GHSA-9242-6p36-6256

EPSS Score

0.38636%

CWE

CWE-1333

Published

10/25/2023

Updated

11/8/2023

KEV Status

Technology

JavaScript

Basic Information

CVE ID

GHSA ID

EPSS Score

CWE

Published

Updated

KEV Status

Technology

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CVE-2023-39619

CVE-2023-39619: Inefficient Regular Expression Complexity in node-email-check

ReDos in NPMJS Node Email Check v.1.0.4 allows an attacker to cause a denial of service via a crafted string to the scpSyntax component.

(GitHub Advisory)

Miggo Vulnerability Database

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CVE-2023-39619

CVE-2023-39619:

7.5

CVSS Score

3.1

-

CVSS Score

Basic Information

CVE ID

CVE-2023-39619

GHSA ID

GHSA-9242-6p36-6256

EPSS Score

0.38636%

CWE

CWE-1333

Published

10/25/2023

Updated

11/8/2023

KEV Status

Technology

JavaScript

Basic Information

CVE ID

GHSA ID

EPSS Score

CWE

Published

Updated

KEV Status

Technology

Technical Details

CVSS Vector

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

Package Name	Ecosystem	Vulnerable Versions	First Patched Version
node-email-check	npm	<= 1.0.4

Technical Details

Vulnerability Intelligence
Miggo AI

Root Cause Analysis

The vulnerability documentation explicitly mentions the scpSyntax component as the attack vector
The provided PoC in the Gist demonstrates the attack through isValidSync
NPM documentation shows isValidSync performs synchronous validation without MX checks, directly engaging the regex
The GitHub issue #2 confirms the regex vulnerability manifests in this function
While the async isValid() might also be vulnerable, the sync version is explicitly demonstrated and more likely to be used in contexts where ReDoS would be impactful

Vulnerable functions

Only Mi**o us*rs **n s** t*is s**tion

WAF Protection Rules

WAF Rule

W** rul*s *v*il**l* *or Mi**o *ustom*rs only.W** rul*s *v*il**l* *or Mi**o *ustom*rs only.W** rul*s *v*il**l* *or Mi**o *ustom*rs only.W** rul*s *v*il**l* *or Mi**o *ustom*rs only.W** rul*s *v*il**l* *or Mi**o *ustom*rs only.W** rul*s *v*il**l* *or Mi**o *ustom*rs only.W** rul*s *v*il**l* *or Mi**o *ustom*rs only.W** rul*s *v*il**l* *or Mi**o *ustom*rs only.W** rul*s *v*il**l* *or Mi**o *ustom*rs only.W** rul*s *v*il**l* *or Mi**o *ustom*rs only.

Reasoning

*v*il**l* *or Mi**o *ustom*rs only.*v*il**l* *or Mi**o *ustom*rs only.*v*il**l* *or Mi**o *ustom*rs only.*v*il**l* *or Mi**o *ustom*rs only.*v*il**l* *or Mi**o *ustom*rs only.*v*il**l* *or Mi**o *ustom*rs only.*v*il**l* *or Mi**o *ustom*rs only.*v*il**l* *or Mi**o *ustom*rs only.*v*il**l* *or Mi**o *ustom*rs only.*v*il**l* *or Mi**o *ustom*rs only.

7.5

-

Basic Information

Basic Information

Concerned about an active attack path?

CVE-2023-39619: Inefficient Regular Expression Complexity in node-email-check

CVE-2023-39619:

7.5

-

Basic Information

Basic Information

Technical Details

Technical Details

Vulnerability IntelligenceMiggo AI

Root Cause Analysis

Vulnerable functions

WAF Protection Rules

WAF Rule

Reasoning

Vulnerability IntelligenceMiggo AI

Basic Information

Basic Information

7.5

7.5

Technical Details

Vulnerability IntelligenceMiggo AI

Root Cause Analysis

Vulnerable functions

WAF Protection Rules

WAF Rule

Reasoning

CVE-2023-39619: Inefficient Regular Expression Complexity in node-email-check

Vulnerability Intelligence
Miggo AI

Vulnerability Intelligence
Miggo AI

Vulnerability Intelligence
Miggo AI