nodemailer before 10.0.6 Denial of Service via addressparser

Publishers link these advisories through the identifiers shown below. A shared identifier or date alone does not tell you whether your software is affected or whether the advisories describe the same cause.

CVE-2026-100700 · CVE overview and exploitation status

EUVD-2026-87673

GHSA-c7vw-frhj-6h9j

GHSA-v53p-9fqp-m79j

cve-program · CVE-2026-100700

• https://github.com/nodemailer/nodemailer/security/advisories/GHSA-v53p-9fqp-m79j
• https://www.vulncheck.com/advisories/nodemailer-before-10.0.6-denial-of-service-via-addressparser

euvd · EUVD-2026-87673

• https://github.com/nodemailer/nodemailer/security/advisories/GHSA-v53p-9fqp-m79j
• https://www.vulncheck.com/advisories/nodemailer-before-10.0.6-denial-of-service-via-addressparser

nvd · CVE-2026-100700

• https://github.com/nodemailer/nodemailer/security/advisories/GHSA-v53p-9fqp-m79j
• https://www.vulncheck.com/advisories/nodemailer-before-10.0.6-denial-of-service-via-addressparser

osv · GHSA-v53p-9fqp-m79j

• https://github.com/nodemailer/nodemailer/security/advisories/GHSA-v53p-9fqp-m79j
• https://github.com/nodemailer/nodemailer/commit/437d7fc47403df176bc39271641541b7a9bce102
• https://github.com/nodemailer/nodemailer
• https://github.com/nodemailer/nodemailer/releases/tag/v10.0.6

• 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-f… · Advisory content revised · 11 Nov 2026