nodemailer

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

Same major only

1 release in betweenevery note read

Other targets from 9.0.4Newest 9.x9.1.1 Clears its 14 advisories10.1.4 Latest10.2.1

0
changes to make: 0
advisories fixed: 0
new: 8
fixes

Security

14 advisories still affect 9.0.5

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.

Release by release

9.0.5
7 Aug 20268 fixes
- fixed
  mailer: escape specials in List-* header comments
- fixed
  mime-funcs: star the continuation key of a restarted parameter line
- fixed
  mime-node: keep control chars out of header values and msg-id headers
- fixed
  mime: encode DEL in header parameters and List-* comments

1 internal line (docs, tests, tooling) left out.

Upgrade to 9.0.5

npm install nodemailer@9.0.5

What 9.0.5 needs

Reading 9.0.5's manifest…

Check against your package.json

Which of your other dependencies stand in the way of 9.0.5. 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.
14 advisories still affect 9.0.5.