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 10.0.4Newest 10.x, Latest10.2.1 Clears its 10 advisories10.1.4

0
changes to make: 1
advisory fixed: 0
new: 1
fix

Security

9 advisories still affect 10.0.5

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.

Fixes 1 advisory affecting 10.0.4

Nodemailer addressparser: O(n^2) on comment-joined addresses enables a remote DoS (reachable via mailparser)high · GHSA-prgh-xp8r-p3m5

Release by release

10.0.5
11 Sep 20261 fix
- fixed
  addressparser: parse comment-joined addresses in linear time

Upgrade to 10.0.5

npm install nodemailer@10.0.5

What 10.0.5 needs

Reading 10.0.5's manifest…

Check against your package.json

Which of your other dependencies stand in the way of 10.0.5. 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.
9 advisories still affect 10.0.5.