UBUNTU-CVE-2026-114348

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Source
https://ubuntu.com/security/CVE-2026-114348
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-114348.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-114348
Upstream
Published
2026-10-26T00:00:00Z
Modified
2026-10-27T04:17:42Z
Severity
  • 5.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

webpack-dev-server is a development server that provides live reloading for webpack projects. In versions from 5.1.0 before 5.2.7 and in version 6.0.0, the unauthenticated open-editor endpoint validates the Host header with a regular expression meant for browser Origin schemes, so a Host value beginning with file: or with an extension scheme short-circuits the hostname and allowedHosts checks. A network peer that can reach the dev server can send a request with a malformed Host that passes validation and then causes the endpoint's URL construction to throw, and in the default non-production mode the server returns an HTTP 500 body containing the full exception stack trace, which discloses absolute filesystem paths, installed module locations, and internal source line numbers. The server keeps running, so there is no denial of service. The issue is fixed in webpack-dev-server 5.2.7 and 6.1.0, and users should upgrade to one of those versions or later.

References

Affected packages

Ubuntu:18.04:LTS
node-webpack

Package

Name
node-webpack
Purl
pkg:deb/ubuntu/node-webpack?arch=source&distro=bionic

Affected ranges

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

Affected versions

3.*
3.5.6-1build3
3.5.6-1build4
3.5.6-2

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "webpack",
            "binary_version":  "3.5.6-2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-114348.json"
Ubuntu:20.04:LTS
node-webpack

Package

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

Affected ranges

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

Affected versions

4.*
4.7.0-3
4.30.0-7
4.30.0-9

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "webpack",
            "binary_version":  "4.30.0-9"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-114348.json"
Ubuntu:22.04:LTS
node-webpack

Package

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

Affected ranges

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

Affected versions

4.*
4.43.0-6build4
4.43.0-7

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "webpack",
            "binary_version":  "4.43.0-7"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-114348.json"
Ubuntu:24.04:LTS
node-webpack

Package

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

Affected ranges

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

Affected versions

5.*
5.76.1+dfsg1+~cs17.16.16-1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "webpack",
            "binary_version":  "5.76.1+dfsg1+~cs17.16.16-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-114348.json"
Ubuntu:26.04:LTS
node-webpack

Package

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

Affected ranges

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

Affected versions

5.*
5.97.1+dfsg1+~cs11.18.27-3
5.97.1+dfsg1+~cs11.18.27-4
5.105.4+dfsg1+~cs15.13.23-2

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "webpack",
            "binary_version":  "5.105.4+dfsg1+~cs15.13.23-2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-114348.json"
Ubuntu:26.10
node-webpack

Package

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

Affected ranges

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

Affected versions

5.*
5.105.4+dfsg1+~cs15.13.23-2
5.108.0+dfsg1+~cs14.7.20-2

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "webpack",
            "binary_version":  "5.108.0+dfsg1+~cs14.7.20-2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-114348.json"