EUVD-2026-101752

Nodemailer 3.0.0 before 10.0.13 has a regular expression denial of service in SMTPConnection.actionEHLO, whose four AUTH mechanism detection regexes contain overlapping whitespace sub-patterns that backtrack quadratically. A malicious or man-in-the-middle SMTP server can reply to EHLO with...

CVE-2026-110869

The Nodemailer library (versions 3.0.0 before 10.0.13 ) is vulnerable to a Regular Expression Denial of Service (ReDoS) in the SMTPConnection._actionEHLO function. The issue stems from four AUTH mechanism detection regexes containing overlapping whitespace sub-patterns that lead to quadratic back...