npm/nodemailer CVE-2026-110871: medium 6.5
Nodemailer: Quadratic (O(n^2)) DKIM header unfolding lets a large folded header cause remote denial of service during signing
Action: Upgrade nodemailer to 10.0.10 or later.
npm i nodemailer@10.0.10Affected
| introduced | fixed | last affected |
|---|---|---|
| 3.0.0 | 10.0.10 | - |
Fixed versions
| 10.0.10 |
Sources
- osv: GHSA-39m8-27wv-hr27
- https://github.com/nodemailer/nodemailer/security/advisories/GHSA-39m8-27wv-hr27
- https://nvd.nist.gov/vuln/detail/CVE-2026-110871
- https://github.com/nodemailer/nodemailer/commit/28a5909cec27646cb001dc7e97a8f5d26c973078
- https://github.com/nodemailer/nodemailer
- https://github.com/nodemailer/nodemailer/releases/tag/v10.0.10
- https://www.vulncheck.com/advisories/nodemailer-3.0.0-before-10.0.10-quadratic-dkim-header-unfolding-denial-of-service
CVE-2026-110871 · published · modified · JSON