UBUNTU-CVE-2026-110869

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Source
https://ubuntu.com/security/CVE-2026-110869
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-110869.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-110869
Upstream
Published
2026-10-15T00:00:00Z
Modified
2026-10-17T12:58:03Z
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 CVSS Calculator
  • Ubuntu - medium
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

Ubuntu:20.04:LTS / node-nodemailer

Package

Name
node-nodemailer
Purl
pkg:deb/ubuntu/node-nodemailer?arch=source&distro=focal

Affected ranges

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

Affected versions

6.*
6.3.0-2
6.3.1-1
6.4.0-1
6.4.1-1
6.4.2-1
6.4.5-1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "node-nodemailer",
            "binary_version":  "6.4.5-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-110869.json"

Ubuntu:22.04:LTS / node-nodemailer

Package

Name
node-nodemailer
Purl
pkg:deb/ubuntu/node-nodemailer?arch=source&distro=jammy

Affected ranges

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

Affected versions

6.*
6.4.17-3
6.7.0-1
6.7.0-2
6.7.1+~6.4.4-1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "node-nodemailer",
            "binary_version":  "6.7.1+~6.4.4-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-110869.json"

Ubuntu:24.04:LTS / node-nodemailer

Package

Name
node-nodemailer
Purl
pkg:deb/ubuntu/node-nodemailer?arch=source&distro=noble

Affected ranges

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

Affected versions

6.*
6.9.4+~6.4.9-2
6.9.4+~6.4.9-3ubuntu1
6.9.4+~6.4.9-4

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "node-nodemailer",
            "binary_version":  "6.9.4+~6.4.9-4"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-110869.json"

Ubuntu:26.10 / node-nodemailer

Package

Name
node-nodemailer
Purl
pkg:deb/ubuntu/node-nodemailer?arch=source&distro=stonking

Affected ranges

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

Affected versions

8.*
8.0.4+~7.0.11-1
8.0.4+~7.0.11-2
9.*
9.0.0+~8.0.1-1
9.0.3+~8.0.1-1
9.0.5+~8.0.1-1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "node-nodemailer",
            "binary_version":  "9.0.5+~8.0.1-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-110869.json"

Ubuntu:26.04:LTS / node-nodemailer

Package

Name
node-nodemailer
Purl
pkg:deb/ubuntu/node-nodemailer?arch=source&distro=resolute

Affected ranges

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

Affected versions

7.*
7.0.5+~7.0.1-1
7.0.9+~7.0.2-2
7.0.10+~7.0.2-1
7.0.12+~7.0.5-1
8.*
8.0.4+~7.0.11-1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "node-nodemailer",
            "binary_version":  "8.0.4+~7.0.11-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-110869.json"