GHSA-vm5r-23w9-m8hx

Suggest an improvement
Source
https://github.com/advisories/GHSA-vm5r-23w9-m8hx
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/09/GHSA-vm5r-23w9-m8hx/GHSA-vm5r-23w9-m8hx.json
JSON Data
https://api.osv.dev/v1/vulns/GHSA-vm5r-23w9-m8hx
Downstream
CGA (24)
Withdrawn
2026-10-05T23:30:00Z
Published
2026-09-13T12:31:12Z
Modified
2026-10-05T23:45:08Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
  • 8.7 (High) CVSS_V4 - 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X CVSS Calculator
Summary
Duplicate Advisory: Nodemailer addressparser: O(n^2) on comment-joined addresses enables a remote DoS (reachable via mailparser)
Details

Duplicate Advisory

This advisory has been withdrawn because it is a duplicate of GHSA-prgh-xp8r-p3m5. This link is maintained to preserve external references.

Original Description

Nodemailer versions 9.1.0 through 10.0.4 contain a quadratic time complexity vulnerability in the addressparser component when parsing email addresses with RFC 5322 comments. Attackers can craft malicious email headers with comment-separated atoms to consume excessive CPU and block the Node.js event loop for several seconds, causing denial of service.

Database specific 
{
    "cwe_ids": [
        "CWE-407"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-10-05T23:30:00Z",
    "nvd_published_at": "2026-09-13T12:17:16Z",
    "severity": "HIGH"
}
References

Affected packages

npm / nodemailer

Package

Name
nodemailer
View open source insights on deps.dev
Purl
pkg:npm/nodemailer

Affected ranges

Type
SEMVER
Events
Introduced
9.1.0
Last Affected
10.0.4

Database specific

source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/09/GHSA-vm5r-23w9-m8hx/GHSA-vm5r-23w9-m8hx.json"