CVE-2026-92596— Nodemailer before 9.1.0 Denial of Service via addressparser
Quick assessment
Affected
nodemailer nodemailer
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Nodemailer before 9.1.0 contains a quadratic time complexity vulnerability in the addressparser component that allows remote attackers to cause denial of service by supplying a crafted comma-separated address list. Attackers can send a single email with a larg
Possible ATT&CK Techniques 1 AI
T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2026-92596
Vulnerability Information
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Vulnerability Title
Nodemailer before 9.1.0 Denial of Service via addressparser
Source: CVE Program / CVE List V5
Vulnerability Description
Nodemailer before 9.1.0 contains a quadratic time complexity vulnerability in the addressparser component that allows remote attackers to cause denial of service by supplying a crafted comma-separated address list. Attackers can send a single email with a large number of addresses to block the Node.js event loop for extended periods, consuming 100% CPU and freezing the process.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
未加控制的资源消耗(资源穷尽)
Source: CVE Program / CVE List V5
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| nodemailer | nodemailer | 0 ~ 9.1.0 | - |
|
II. Public POCs for CVE-2026-92596
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Patches & Fixes for CVE-2026-92596 (3)
Vendor Advisories for CVE-2026-92596 (1)
Other References for CVE-2026-92596 (1)
Same Patch Batch · nodemailer · 2026-09-16 · 4 CVEs total
| CVE-2026-92598 | 6.5 MEDIUM | Nodemailer before 9.1.0 IDN/Punycode Domain Allow-list Bypass |
| CVE-2026-92597 | 6.5 MEDIUM | Nodemailer before 9.1.0 Email Domain Validation Bypass via RFC 5322 Comment |
| CVE-2026-92595 | 5.9 MEDIUM | Nodemailer before 9.1.1 Security Sandbox Bypass via resolveContent |
IV. Related Vulnerabilities
Same product: nodemailer
-
CVE-2026-92597
Nodemailer before 9.1.0 Email Domain Validation Bypass via R -
CVE-2026-92598
Nodemailer before 9.1.0 IDN/Punycode Domain Allow-list Bypas -
CVE-2026-92595
Nodemailer before 9.1.1 Security Sandbox Bypass via resolveC -
CVE-2026-90776
Nodemailer 9.1.0 through 10.0.4 Denial of Service via Quadra -
CVE-2026-82853
Nodemailer before 8.0.5 SMTP Command Injection via CRLF
Same vendor: nodemailer
-
CVE-2026-92598
Nodemailer before 9.1.0 IDN/Punycode Domain Allow-list Bypas -
CVE-2026-92597
Nodemailer before 9.1.0 Email Domain Validation Bypass via R -
CVE-2026-92595
Nodemailer before 9.1.1 Security Sandbox Bypass via resolveC -
CVE-2026-90776
Nodemailer 9.1.0 through 10.0.4 Denial of Service via Quadra -
CVE-2026-82854
Nodemailer before 8.0.3 SMTP Command Injection via envelope.
Same weakness: CWE-400
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node-opcua: TCP Socket Leak (FIN-WAIT-2) via keepalive recon -
CVE-2026-79651
Keycloak-services: keycloak-services: unauthenticated dos vi
V. Comments for CVE-2026-92596
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