HIGH 8.7 NVD
CVE-2026-100700
nodemailer before 10.0.6 contains a denial of service vulnerability in the addressparser free-text fallback regex pattern that exhibits quadratic backtracking b
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
- 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-addres
This high severity vulnerability with a CVSS score of 8.7 was published on 2026-09-26 via NVD.
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