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  5. GHSA-85x2-q946-cp5h

GHSA-85x2-q946-cp5h: Nodemailer: A ">" inside a quoted local part ends an angle-addr early in addressparser, delivering to a domain the header does not name

October 23, 2026

addressparser ends an angle-addr at the first > it sees, including one inside a quoted local part, a comment or a domain literal. The domain is then read off the text in front of that >. <"a@evil.com>"@good.com> is the mailbox "a@evil.com>"@good.com under RFC 5322, and Nodemailer read it as an address at evil.com. The unbracketed spelling of the same value was already read correctly. Affected: 3.0.0 through 10.1.3.

References

  • github.com/advisories/GHSA-85x2-q946-cp5h
  • github.com/nodemailer/nodemailer/commit/1cd57d2b8c49dff048c21cdbafdb54439a7f07e2
  • github.com/nodemailer/nodemailer/releases/tag/v10.1.4
  • github.com/nodemailer/nodemailer/security/advisories/GHSA-85x2-q946-cp5h

Code Behaviors & Features

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Affected versions

All versions starting from 3.0.0 before 10.1.4

Fixed versions

  • 10.1.4

Solution

Upgrade to version 10.1.4 or above.

Impact 6.5 MEDIUM

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N

Learn more about CVSS

Weakness

  • CWE-20: Improper Input Validation
  • CWE-436: Interpretation Conflict

Source file

npm/nodemailer/GHSA-85x2-q946-cp5h.yml

Spotted a mistake? Edit the file on GitLab.

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