What is GHSA-c7vw-frhj-6h9j?

GHSA-c7vw-frhj-6h9j is a security advisory published by GitHub Security Advisories with High severity. nodemailer before 10.0.6 contains a denial of service vulnerability in the addressparser free...

Which CVE IDs does GHSA-c7vw-frhj-6h9j cover?

GHSA-c7vw-frhj-6h9j covers the following CVE IDs: CVE-2026-100700. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-c7vw-frhj-6h9j?

GHSA-c7vw-frhj-6h9j has a CVSS v3 base score of 7.5, published by GitHub Security Advisories.

GHSA-c7vw-frhj-6h9jHighCVSS 7.5

nodemailer before 10.0.6 contains a denial of service vulnerability in the addressparser free...

Vendor

GitHub Security Advisories

Published

September 26, 2026

Last Modified

September 26, 2026

🔗 CVE IDs covered (1)

CVE-2026-100700 →

📋 Description

nodemailer before 10.0.6 contains a denial of service vulnerability in the addressparser free-text fallback regex pattern that exhibits quadratic backtracking behavior. Attackers can supply crafted email header values with long whitespace-free runs to block the Node.js event loop for tens of seconds, causing service unavailability.

🔗 References (4)

https://github.com/nodemailer/nodemailer/security/advisories/GHSA-v53p-9fqp-m79j
https://nvd.nist.gov/vuln/detail/CVE-2026-100700
https://www.vulncheck.com/advisories/nodemailer-before-10.0.6-denial-of-service-via-addressparser
https://github.com/advisories/GHSA-c7vw-frhj-6h9j