Technology · npm
nodemailer (npm) vulnerabilities
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Junglewise Threat Intelligence has tracked 17 vulnerabilities in nodemailer (npm): 0 in the last 7 days and 15 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, Nodemailer addressparser RFC 5322 comment parsing bypass, was published on 23 October 2026. 8 vulnerabilities in the last four weeks, up 100% on the four before (4).
- Last 7 days
- 0
- Last 90 days
- 15
- Critical, all time
- 0
- Exploited in the wild
- 0
About nodemailer (npm)
Node.js library for sending emails via SMTP, Sendmail, and other transports.
Latest nodemailer (npm) vulnerabilities
- Nodemailer addressparser RFC 5322 comment parsing bypassmediumCVSS 6.5
- Nodemailer addressparser group terminator bypass in quoted stringsmediumCVSS 6.5
- Nodemailer addressparser angle-addr parsing bypassmediumCVSS 6.5
- Nodemailer quadratic DKIM header unfolding denial of servicemediumCVSS 6.5
- CVE-2026-110872: Nodemailer SMTP parser denial of servicemediumCVSS 5.9EPSS 0.4%
- CVE-2026-110871: Nodemailer quadratic complexity in DKIM header unfoldingmediumCVSS 6.5EPSS 0.3%
- CVE-2026-110870: Nodemailer improper input validation in address parsermediumCVSS 5.3EPSS 0.3%
- CVE-2026-110869: Nodemailer regular expression denial of service in SMTP AUTH detectionhighCVSS 7.5EPSS 0.4%
- CVE-2026-100702: Nodemailer stack exhaustion in recipient array flatteningmediumCVSS 5.9EPSS 0.3%
- CVE-2026-100701: Nodemailer TLS servername cache confusion vulnerabilitymediumCVSS 5.9EPSS 0.1%
- CVE-2026-100700: nodemailer addressparser regular expression denial of servicehighCVSS 7.5EPSS 0.3%
- CVE-2026-100699: Nodemailer address parser malformed recipient in RFC 5322 commentsmediumCVSS 5.3EPSS 0.2%
- Nodemailer addressparser O(n²) complexity denial of servicehighCVSS 7.5
- CVE-2026-90776: Nodemailer quadratic time complexity in address parserhighCVSS 7.5EPSS 0.7%
- Duplicate Advisory: Nodemailer: Improper TLS Certificate Validation in OAuth2 Token Fetch Enables Credential InterceptionmediumCVSS 6.5
- Nodemailer denial of service in address parserlowCVSS 3.1
- CVE-2025-13033: Nodemailer improper email parsing in addressparserhighCVSS 7.5EPSS 0.5%
Most severe nodemailer (npm) vulnerabilities
Exploited in the wild first, then by severity and CVSS score.
- CVE-2026-90776: Nodemailer quadratic time complexity in address parserhighCVSS 7.5EPSS 0.7%
- CVE-2025-13033: Nodemailer improper email parsing in addressparserhighCVSS 7.5EPSS 0.5%
- CVE-2026-110869: Nodemailer regular expression denial of service in SMTP AUTH detectionhighCVSS 7.5EPSS 0.4%
- CVE-2026-100700: nodemailer addressparser regular expression denial of servicehighCVSS 7.5EPSS 0.3%
- Nodemailer addressparser O(n²) complexity denial of servicehighCVSS 7.5
- CVE-2026-110871: Nodemailer quadratic complexity in DKIM header unfoldingmediumCVSS 6.5EPSS 0.3%
- Nodemailer addressparser RFC 5322 comment parsing bypassmediumCVSS 6.5
- Nodemailer addressparser group terminator bypass in quoted stringsmediumCVSS 6.5
- Nodemailer addressparser angle-addr parsing bypassmediumCVSS 6.5
- Nodemailer quadratic DKIM header unfolding denial of servicemediumCVSS 6.5
Vulnerabilities per week
8 vulnerabilities in the last four weeks, up 100% on the four before (4). The last 13 weeks, by the week each vulnerability was published.
| Week of | Bar | Vulns | Critical |
|---|---|---|---|
| 17 Aug 2026 | 0 | 0 | |
| 24 Aug 2026 | 0 | 0 | |
| 31 Aug 2026 | 1 | 0 | |
| 7 Sep 2026 | 2 | 0 | |
| 14 Sep 2026 | 0 | 0 | |
| 21 Sep 2026 | 4 | 0 | |
| 28 Sep 2026 | 0 | 0 | |
| 5 Oct 2026 | 0 | 0 | |
| 12 Oct 2026 | 5 | 0 | |
| 19 Oct 2026 | 3 | 0 | |
| 26 Oct 2026 | 0 | 0 | |
| 2 Nov 2026 | 0 | 0 | |
| 9 Nov 2026 | 0 | 0 |
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A live badge for a README, a status page or an internal wiki: how many nodemailer (npm) vulnerabilities were published in the last 7 days and how many of them are critical, refreshed hourly.
[](https://junglewise.ai/threats/technologies/npm-nodemailer)<a href="https://junglewise.ai/threats/technologies/npm-nodemailer"><img src="https://junglewise.ai/threats/technologies/npm-nodemailer/badge.svg" alt="nodemailer (npm) vulnerabilities" /></a>How this is built
Junglewise Threat Intelligence collects vulnerabilities from NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories, and matches each one to the technologies and vendors it affects. Dates are the date a vulnerability was published, in UTC.
The pages are rebuilt from the database every hour. Frozen weekly and monthly reports never change once published, so they can be cited.
Use this data
The same data is at https://junglewise.ai/threats/technologies/npm-nodemailer.json, and this page as text at https://junglewise.ai/threats/technologies/npm-nodemailer.md, for scripts and language models. It is free to reuse under CC BY 4.0 with a link back to this page.
Cite as: Junglewise Threat Intelligence, "nodemailer (npm) vulnerabilities", https://junglewise.ai/threats/technologies/npm-nodemailer, 13 November 2026.