Hi,

The following vulnerability was published for node-nodemailer.

CVE-2026-90776[0]:
| Nodemailer versions 9.1.0 through 10.0.4 contain a quadratic time
| complexity vulnerability in the addressparser component when parsing
| email addresses with RFC 5322 comments. Attackers can craft
| malicious email headers with comment-separated atoms to consume
| excessive CPU and block the Node.js event loop for several seconds,
| causing denial of service.


If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2026-90776
https://www.cve.org/CVERecord?id=CVE-2026-90776
[1] https://github.com/nodemailer/nodemailer/security/advisories/GHSA-prgh-xp8r-p3m5
[2] https://github.com/nodemailer/nodemailer/commit/c07f17518d25aca8ab2ad66968dcbca538c24b89

Please adjust the affected versions in the BTS as needed.

Regards,
Salvatore