CVE-2026-82661: Nodemailer

Medium severity, CVSS 5.4. EPSS: 0.3% chance of exploitation in the next 30 days.

Nodemailer before 8.0.9 fails to sanitize carriage return and line feed characters in list comment fields, allowing attackers to inject arbitrary message headers. An attacker with control over list.*.comment parameters can inject CRLF sequences to create additional headers in generated RFC822 messages, altering mail client behavior and message semantics.

Affected products

• Nodemailer Nodemailer: before 8.0.9 (fixed in 8.0.9)

Published 2026-08-31. Last modified 2026-09-10.