CVE-2026-92596CWE-400denial-of-service

CVE-2026-92596

High · published September 17, 2026

CVSS v3.1
7.5
EPSS
1%
Percentile
56.9
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
8.7 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
EPSS
0.00824 · 56.9th percentile
Weakness
CWE-400 · Uncontrolled Resource Consumption
Published
2026-09-17T02:18Z
References (7)
https://github.com/nodemailer/nodemailer/commit/34da642 · [email protected]https://github.com/nodemailer/nodemailer/commit/7cc38af · [email protected]https://github.com/nodemailer/nodemailer/commit/83b8c48 · [email protected]https://github.com/nodemailer/nodemailer/commit/9116da9 · [email protected]https://github.com/nodemailer/nodemailer/security/advisories/GHSA-2x7j-588g-ccc2 · [email protected]https://www.vulncheck.com/advisories/nodemailer-before-9.1.0-denial-of-service-via-addressparser · [email protected]https://github.com/nodemailer/nodemailer/security/advisories/GHSA-2x7j-588g-ccc2 · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 18 SEP 04:02Z
    EPSS moved — → 0%
    epss
  • 16 SEP 21:47Z
    Nodemailer before 9.1.0 Denial of Service via addressparser
    cvelistv5