# nodemailer (npm) vulnerabilities Source: https://junglewise.ai/threats/technologies/npm-nodemailer Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats Updated: 13 November 2026, 03:07 UTC. Rebuilt every hour. Data: https://junglewise.ai/threats/technologies/npm-nodemailer.json License: CC BY 4.0 with a link back 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). ## Counts - Last 7 days: 0 - Last 30 days: 8 - Last 90 days: 15 - All time: 17 (0 critical, 0 exploited in the wild) ## 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 bypass](https://junglewise.ai/threats/nodemailer-a-nested-comment-ends-early-in-addressparser-releasing-the-4e80613c) (medium, CVSS 6.5, published 23 Oct 2026) - [Nodemailer addressparser group terminator bypass in quoted strings](https://junglewise.ai/threats/nodemailer-a-inside-a-quoted-string-or-comment-ends-an-address-group-b8b045f9) (medium, CVSS 6.5, published 23 Oct 2026) - [Nodemailer addressparser angle-addr parsing bypass](https://junglewise.ai/threats/nodemailer-a-inside-a-quoted-local-part-ends-an-angle-addr-early-in-28663cfb) (medium, CVSS 6.5, published 23 Oct 2026) - [Nodemailer quadratic DKIM header unfolding denial of service](https://junglewise.ai/threats/duplicate-advisory-nodemailer-quadratic-o-n-2-dkim-header-unfolding-a2b86ca5) (medium, CVSS 6.5, published 15 Oct 2026) - [CVE-2026-110872: Nodemailer SMTP parser denial of service](https://junglewise.ai/threats/cve-2026-110872-nodemailer-from-3-0-0-before-10-0-10-contains-a-quadratic) (medium, CVSS 5.9, published 14 Oct 2026) - [CVE-2026-110871: Nodemailer quadratic complexity in DKIM header unfolding](https://junglewise.ai/threats/cve-2026-110871-nodemailer-from-3-0-0-before-10-0-10-contains-a-denial-of) (medium, CVSS 6.5, published 14 Oct 2026) - [CVE-2026-110870: Nodemailer improper input validation in address parser](https://junglewise.ai/threats/cve-2026-110870-nodemailer-from-3-0-0-before-10-0-13-contains-an-improper-input) (medium, CVSS 5.3, published 14 Oct 2026) - [CVE-2026-110869: Nodemailer regular expression denial of service in SMTP AUTH detection](https://junglewise.ai/threats/cve-2026-110869-nodemailer-3-0-0-before-10-0-13-has-a-regular-expression-denial) (high, CVSS 7.5, published 14 Oct 2026) - [CVE-2026-100702: Nodemailer stack exhaustion in recipient array flattening](https://junglewise.ai/threats/cve-2026-100702-nodemailer-before-10-0-2-fails-to-properly-flatten-deeply-nested) (medium, CVSS 5.9, published 26 Sep 2026) - [CVE-2026-100701: Nodemailer TLS servername cache confusion vulnerability](https://junglewise.ai/threats/cve-2026-100701-nodemailer-versions-5-0-0-through-10-0-1-use-a-process-global) (medium, CVSS 5.9, published 26 Sep 2026) - [CVE-2026-100700: nodemailer addressparser regular expression denial of service](https://junglewise.ai/threats/cve-2026-100700-nodemailer-before-10-0-6-contains-a-denial-of-service) (high, CVSS 7.5, published 26 Sep 2026) - [CVE-2026-100699: Nodemailer address parser malformed recipient in RFC 5322 comments](https://junglewise.ai/threats/cve-2026-100699-nodemailer-is-a-node-js-email-sending-library-in-versions-9-1-0) (medium, CVSS 5.3, published 26 Sep 2026) - [Nodemailer addressparser O(n²) complexity denial of service](https://junglewise.ai/threats/duplicate-advisory-nodemailer-addressparser-o-n-2-on-comment-joined-7e26ae29) (high, CVSS 7.5, published 13 Sep 2026) - [CVE-2026-90776: Nodemailer quadratic time complexity in address parser](https://junglewise.ai/threats/cve-2026-90776-nodemailer-quadratic-time-complexity-in-address-parser) (high, CVSS 7.5, published 13 Sep 2026) - [Duplicate Advisory: Nodemailer: Improper TLS Certificate Validation in OAuth2 Token Fetch Enables Credential Interception](https://junglewise.ai/threats/duplicate-advisory-nodemailer-improper-tls-certificate-validation-in-f2e6133e) (medium, CVSS 6.5, published 31 Aug 2026) - [Nodemailer denial of service in address parser](https://junglewise.ai/threats/nodemailer-denial-of-service-in-address-parser-2820868a) (low, CVSS 3.1, published 18 Dec 2025) - [CVE-2025-13033: Nodemailer improper email parsing in addressparser](https://junglewise.ai/threats/cve-2025-13033-nodemailer-improper-email-parsing-in-addressparser) (high, CVSS 7.5, published 14 Nov 2025) ## Most severe nodemailer (npm) vulnerabilities - [CVE-2026-90776: Nodemailer quadratic time complexity in address parser](https://junglewise.ai/threats/cve-2026-90776-nodemailer-quadratic-time-complexity-in-address-parser) (high, CVSS 7.5, published 13 Sep 2026) - [CVE-2025-13033: Nodemailer improper email parsing in addressparser](https://junglewise.ai/threats/cve-2025-13033-nodemailer-improper-email-parsing-in-addressparser) (high, CVSS 7.5, published 14 Nov 2025) - [CVE-2026-110869: Nodemailer regular expression denial of service in SMTP AUTH detection](https://junglewise.ai/threats/cve-2026-110869-nodemailer-3-0-0-before-10-0-13-has-a-regular-expression-denial) (high, CVSS 7.5, published 14 Oct 2026) - [CVE-2026-100700: nodemailer addressparser regular expression denial of service](https://junglewise.ai/threats/cve-2026-100700-nodemailer-before-10-0-6-contains-a-denial-of-service) (high, CVSS 7.5, published 26 Sep 2026) - [Nodemailer addressparser O(n²) complexity denial of service](https://junglewise.ai/threats/duplicate-advisory-nodemailer-addressparser-o-n-2-on-comment-joined-7e26ae29) (high, CVSS 7.5, published 13 Sep 2026) - [CVE-2026-110871: Nodemailer quadratic complexity in DKIM header unfolding](https://junglewise.ai/threats/cve-2026-110871-nodemailer-from-3-0-0-before-10-0-10-contains-a-denial-of) (medium, CVSS 6.5, published 14 Oct 2026) - [Nodemailer addressparser RFC 5322 comment parsing bypass](https://junglewise.ai/threats/nodemailer-a-nested-comment-ends-early-in-addressparser-releasing-the-4e80613c) (medium, CVSS 6.5, published 23 Oct 2026) - [Nodemailer addressparser group terminator bypass in quoted strings](https://junglewise.ai/threats/nodemailer-a-inside-a-quoted-string-or-comment-ends-an-address-group-b8b045f9) (medium, CVSS 6.5, published 23 Oct 2026) - [Nodemailer addressparser angle-addr parsing bypass](https://junglewise.ai/threats/nodemailer-a-inside-a-quoted-local-part-ends-an-angle-addr-early-in-28663cfb) (medium, CVSS 6.5, published 23 Oct 2026) - [Nodemailer quadratic DKIM header unfolding denial of service](https://junglewise.ai/threats/duplicate-advisory-nodemailer-quadratic-o-n-2-dkim-header-unfolding-a2b86ca5) (medium, CVSS 6.5, published 15 Oct 2026) ## Vulnerabilities per week 8 vulnerabilities in the last four weeks, up 100% on the four before (4). | Week of | Vulns | Critical | Exploited | | --- | --- | --- | --- | | 17 Aug 2026 | 0 | 0 | 0 | | 24 Aug 2026 | 0 | 0 | 0 | | 31 Aug 2026 | 1 | 0 | 0 | | 7 Sep 2026 | 2 | 0 | 0 | | 14 Sep 2026 | 0 | 0 | 0 | | 21 Sep 2026 | 4 | 0 | 0 | | 28 Sep 2026 | 0 | 0 | 0 | | 5 Oct 2026 | 0 | 0 | 0 | | 12 Oct 2026 | 5 | 0 | 0 | | 19 Oct 2026 | 3 | 0 | 0 | | 26 Oct 2026 | 0 | 0 | 0 | | 2 Nov 2026 | 0 | 0 | 0 | | 9 Nov 2026 | 0 | 0 | 0 | ## Other npm technologies - [openclaw (npm)](https://junglewise.ai/threats/technologies/npm-openclaw): 214 vulnerabilities - [flowise (npm)](https://junglewise.ai/threats/technologies/flowise): 133 vulnerabilities - [parse-server (npm)](https://junglewise.ai/threats/technologies/parse-server): 117 vulnerabilities - [vm2 (npm)](https://junglewise.ai/threats/technologies/vm2): 111 vulnerabilities - [electron (npm)](https://junglewise.ai/threats/technologies/electron): 77 vulnerabilities - [ghost (npm)](https://junglewise.ai/threats/technologies/ghost): 74 vulnerabilities - [n8n (npm)](https://junglewise.ai/threats/technologies/npm-n8n): 64 vulnerabilities - [hono (npm)](https://junglewise.ai/threats/technologies/hono): 62 vulnerabilities - [directus (npm)](https://junglewise.ai/threats/technologies/directus): 61 vulnerabilities - [nocodb (npm)](https://junglewise.ai/threats/technologies/nocodb): 54 vulnerabilities - [undici (npm)](https://junglewise.ai/threats/technologies/undici): 53 vulnerabilities - [@budibase/server (npm)](https://junglewise.ai/threats/technologies/budibase-server): 42 vulnerabilities ## Sources NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "nodemailer (npm) vulnerabilities", https://junglewise.ai/threats/technologies/npm-nodemailer, 13 November 2026.