DEBIAN-CVE-2026-110869

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Source
https://security-tracker.debian.org/tracker/CVE-2026-110869
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-110869.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-110869
Upstream
Published
2026-10-14T23:17:28Z
Modified
2026-10-15T12:00:08Z
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
Summary
[none]
Details

Nodemailer 3.0.0 before 10.0.13 has a regular expression denial of service in SMTPConnection._actionEHLO, whose four AUTH mechanism detection regexes contain overlapping whitespace sub-patterns that backtrack quadratically. A malicious or man-in-the-middle SMTP server can reply to EHLO with 250-AUTH, a long whitespace run and a non-matching token, blocking the Node.js event loop for tens of seconds to hours before authentication.

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-2026-110869.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-2026-110869.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
10.0.13+~8.0.2-1

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
10.0.10+~8.0.1-1
10.0.10+~8.0.2-1

Ecosystem specific 

{
    "urgency":  "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-110869.json"