Duplicate Advisory: Nodemailer addressparser: O(n^2) on comment-joined addresses enables a remote DoS (reachable via mailparser)
## Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-prgh-xp8r-p3m5.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.
GHSA-vm5r-23w9-m8hx
Primary source · Revision 1 · Withdrawn
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: osv:GHSA-vm5r-23w9-m8hx
nodemailer
Source reference: /affected/0/package/name
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"ranges": [
{
"type": "SEMVER",
"events": [
{
"introduced": "9.1.0"
},
{
"last_affected": "10.0.4"
}
]
}
],
"package": {
"name": "nodemailer",
"purl": "pkg:npm/nodemailer",
"ecosystem": "npm"
},
"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"
}
}
]Publisher severity
high
Source reference: /database_specific/severity
- Event
- #85943 · Revision 1
- Added to Heist Feed
- Publisher date