nodemailer

10.2.1 · 22 Oct 2026MIT-023.7M / weekRepository Homepage npm Atom feed

Same major only

1 release in betweennotes for 0

Other targets from 8.0.11Clears its 15 advisories10.1.4 Latest10.2.1

9.0.0 has no release note on GitHub or in the repository's changelog, so its breaking changes are missing from the counts below.

?
changes to make: 0
advisories fixed: ?
new: ?
fixes

Counted from 0 of 1 release notes. Advisories are counted from the advisory database, in full.

Security

15 advisories still affect 9.0.0

Nodemailer: Quadratic (O(n^2)) DKIM header unfolding lets a large folded header cause remote denial of service during signingmoderate · GHSA-39m8-27wv-hr27
Nodemailer: Quadratic backtracking in SMTP AUTH mechanism detection regexes allows pre-auth remote denial of servicemoderate · GHSA-4ffr-jq9g-5ffx
Nodemailer: Quadratic (O(n^2)) SMTP client reply parsing lets a malicious server or MITM cause a pre-auth remote denial of servicemoderate · GHSA-4g23-2xm8-66gc

Upgrading to 10.1.4 clears them.

Upgrade to 9.0.0

npm install nodemailer@9.0.0

What 9.0.0 needs

Reading 9.0.0's manifest…

Check against your package.json

Which of your other dependencies stand in the way of 9.0.0. Read once, not stored.

After upgrading

Run the type checker, the linter and the tests.
Build, and look for new deprecation warnings.
Update peer dependencies the new version asks for.
15 advisories still affect 9.0.0.