UBUNTU-CVE-2026-9595

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Source

https://ubuntu.com/security/CVE-2026-9595

Import Source

https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-9595.json

JSON Data

https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-9595

Upstream

CVE-2026-9595

Published

2026-06-15T16:16:00Z

Modified

2026-06-24T08:58:46Z

Severity

5.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L CVSS Calculator
4.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L CVSS Calculator
Ubuntu - medium

Summary

[none]

Details

Impact: When a user-configured proxy on webpack-dev-server has a broad context (e.g. /) and ws: true, it also intercepts the dev server's own HMR WebSocket and forwards it to the proxy target. This leaks the browser's cookies and Origin header to the backend, bypasses the dev server's Host/Origin validation, and corrupts the HMR socket (both HMR and the proxy end up writing to the same socket). Patches: Fixed in webpack-dev-server@5.2.5. Workarounds: Scope user-defined proxy context to specific paths instead of /, or omit ws: true from the proxy entry when WebSocket forwarding is not required.

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

0Unknown 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-2026-9595.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

0Unknown 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-2026-9595.json"

vue.js

Package

Name: vue.js
Purl: pkg:deb/ubuntu/vue.js?arch=source&distro=focal

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

2.*

2.5.17+dfsg-4

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "libjs-vue",
            "binary_version": "2.5.17+dfsg-4"
        },
        {
            "binary_name": "node-vue",
            "binary_version": "2.5.17+dfsg-4"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-9595.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

0Unknown 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-2026-9595.json"

vue.js

Package

Name: vue.js
Purl: pkg:deb/ubuntu/vue.js?arch=source&distro=jammy

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

2.*

2.6.12+dfsg-3

2.6.14+dfsg-1

2.6.14+dfsg-2

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "libjs-vue",
            "binary_version": "2.6.14+dfsg-2"
        },
        {
            "binary_name": "node-vue",
            "binary_version": "2.6.14+dfsg-2"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-9595.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

0Unknown 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-2026-9595.json"

vue.js

Package

Name: vue.js
Purl: pkg:deb/ubuntu/vue.js?arch=source&distro=noble

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

2.*

2.6.14+dfsg1-1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "libjs-vue",
            "binary_version": "2.6.14+dfsg1-1"
        },
        {
            "binary_name": "node-vue",
            "binary_version": "2.6.14+dfsg1-1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-9595.json"

Ubuntu:25.10

node-webpack

Package

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

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

5.*

5.97.1+dfsg1+~cs11.18.27-2

5.97.1+dfsg1+~cs11.18.27-3

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "webpack",
            "binary_version": "5.97.1+dfsg1+~cs11.18.27-3"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-9595.json"

vue.js

Package

Name: vue.js
Purl: pkg:deb/ubuntu/vue.js?arch=source&distro=questing

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

2.*

2.6.14+dfsg1-1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "libjs-vue",
            "binary_version": "2.6.14+dfsg1-1"
        },
        {
            "binary_name": "node-vue",
            "binary_version": "2.6.14+dfsg1-1"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-9595.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

0Unknown 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-2026-9595.json"

vue.js

Package

Name: vue.js
Purl: pkg:deb/ubuntu/vue.js?arch=source&distro=resolute

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

2.*

2.6.14+dfsg1-1

2.6.14+dfsg1-1build1

2.6.14+dfsg1-2

2.6.14+dfsg1-3

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "libjs-vue",
            "binary_version": "2.6.14+dfsg1-3"
        },
        {
            "binary_name": "node-vue",
            "binary_version": "2.6.14+dfsg1-3"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-9595.json"