DEBIAN-CVE-2026-110871

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Source
https://security-tracker.debian.org/tracker/CVE-2026-110871
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-110871.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-110871
Upstream
Published
2026-10-14T23:17:28Z
Modified
2026-10-15T12:00:08Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
[none]
Details

Nodemailer from 3.0.0 before 10.0.10 contains a denial of service vulnerability in MessageParser.parseHeaders that allows users to exhaust CPU through quadratic header unfolding. Attackers can supply large recipient lists or long headers that fold into tens of thousands of continuation lines, blocking the Node.js event loop during DKIM signing.

References

Affected packages

Debian:12 / node-nodemailer

Package

Name
node-nodemailer
Purl
pkg:deb/debian/node-nodemailer?arch=source&distro=bookworm

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

6.*
6.8.0+~6.4.6-1
6.9.4+~6.4.9-1
6.9.4+~6.4.9-2
6.9.4+~6.4.9-3
6.9.4+~6.4.9-4
6.9.13+~6.4.14-1
6.9.15+~6.4.16-1
6.9.16+~6.4.16-1
6.10.0+~6.4.17-1
7.*
7.0.5+~7.0.1-1
7.0.6+~7.0.1-1
7.0.9+~7.0.2-1
7.0.9+~7.0.2-2
7.0.10+~7.0.2-1
7.0.12+~7.0.5-1
8.*
8.0.2+~7.0.11-1
8.0.3+~7.0.11-1
8.0.4+~7.0.11-1
8.0.4+~7.0.11-2
8.0.11+~8.0.1-1
9.*
9.0.0+~8.0.1-1
9.0.3+~8.0.1-1
9.0.5+~8.0.1-1
9.0.6+~8.0.1-1
10.*
10.0.0+~8.0.1-1
10.0.10+~8.0.1-1
10.0.10+~8.0.2-1
10.0.13+~8.0.2-1
10.0.14+~8.0.2-1

Ecosystem specific 

{
    "urgency":  "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-110871.json"

Debian:13 / node-nodemailer

Package

Name
node-nodemailer
Purl
pkg:deb/debian/node-nodemailer?arch=source&distro=trixie

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

6.*
6.10.0+~6.4.17-1
6.10.0+~6.4.17-1+deb13u1
7.*
7.0.5+~7.0.1-1
7.0.6+~7.0.1-1
7.0.9+~7.0.2-1
7.0.9+~7.0.2-2
7.0.10+~7.0.2-1
7.0.12+~7.0.5-1
8.*
8.0.2+~7.0.11-1
8.0.3+~7.0.11-1
8.0.4+~7.0.11-1
8.0.4+~7.0.11-2
8.0.11+~8.0.1-1
9.*
9.0.0+~8.0.1-1
9.0.3+~8.0.1-1
9.0.5+~8.0.1-1
9.0.6+~8.0.1-1
10.*
10.0.0+~8.0.1-1
10.0.10+~8.0.1-1
10.0.10+~8.0.2-1
10.0.13+~8.0.2-1
10.0.14+~8.0.2-1

Ecosystem specific 

{
    "urgency":  "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-110871.json"

Debian:14 / node-nodemailer

Package

Name
node-nodemailer
Purl
pkg:deb/debian/node-nodemailer?arch=source&distro=forky

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
10.0.10+~8.0.1-1

Affected versions

6.*
6.10.0+~6.4.17-1
7.*
7.0.5+~7.0.1-1
7.0.6+~7.0.1-1
7.0.9+~7.0.2-1
7.0.9+~7.0.2-2
7.0.10+~7.0.2-1
7.0.12+~7.0.5-1
8.*
8.0.2+~7.0.11-1
8.0.3+~7.0.11-1
8.0.4+~7.0.11-1
8.0.4+~7.0.11-2
8.0.11+~8.0.1-1
9.*
9.0.0+~8.0.1-1
9.0.3+~8.0.1-1
9.0.5+~8.0.1-1
9.0.6+~8.0.1-1
10.*
10.0.0+~8.0.1-1

Ecosystem specific 

{
    "urgency":  "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-110871.json"