UBUNTU-CVE-2026-33230

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Source
https://ubuntu.com/security/CVE-2026-33230
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-33230.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-33230
Upstream
Published
2026-03-20T23:16:00Z
Modified
2026-03-25T17:36:54Z
Severity
  • 6.1 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

NLTK (Natural Language Toolkit) is a suite of open source Python modules, data sets, and tutorials supporting research and development in Natural Language Processing. In versions 3.9.3 and prior, nltk.app.wordnet_app contains a reflected cross-site scripting issue in the lookup_... route. A crafted lookup_<payload> URL can inject arbitrary HTML/JavaScript into the response page because attacker-controlled word data is reflected into HTML without escaping. This impacts users running the local WordNet Browser server and can lead to script execution in the browser origin of that application. Commit 1c3f799607eeb088cab2491dcf806ae83c29ad8f fixes the issue.

References

Affected packages

Ubuntu:22.04:LTS
nltk

Package

Name
nltk
Purl
pkg:deb/ubuntu/nltk@3.7-1?arch=source&distro=jammy

Affected ranges

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

Affected versions

3.*
3.5-1
3.6.5-1
3.6.7-1
3.7-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "python3-nltk",
            "binary_version": "3.7-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-33230.json"
Ubuntu:24.04:LTS
nltk

Package

Name
nltk
Purl
pkg:deb/ubuntu/nltk@3.8.1-1?arch=source&distro=noble

Affected ranges

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

Affected versions

3.*
3.8.1-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "python3-nltk",
            "binary_version": "3.8.1-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-33230.json"
Ubuntu:25.10
nltk

Package

Name
nltk
Purl
pkg:deb/ubuntu/nltk@3.9.1-2?arch=source&distro=questing

Affected ranges

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

Affected versions

3.*
3.9.1-2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "python3-nltk",
            "binary_version": "3.9.1-2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-33230.json"
Ubuntu:Pro:14.04:LTS
nltk

Package

Name
nltk
Purl
pkg:deb/ubuntu/nltk@2.0~b9-0ubuntu4.1~esm4?arch=source&distro=esm-infra-legacy/trusty

Affected ranges

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

Affected versions

2.*
2.0~b9-0ubuntu4
2.0~b9-0ubuntu4.1~esm2
2.0~b9-0ubuntu4.1~esm4

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "python-nltk",
            "binary_version": "2.0~b9-0ubuntu4.1~esm4"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-33230.json"
Ubuntu:Pro:16.04:LTS
nltk

Package

Name
nltk
Purl
pkg:deb/ubuntu/nltk@3.1-1ubuntu0.1+esm2?arch=source&distro=esm-apps/xenial

Affected ranges

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

Affected versions

3.*
3.0.4-1
3.0.5-1
3.1-1
3.1-1ubuntu0.1
3.1-1ubuntu0.1+esm1
3.1-1ubuntu0.1+esm2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "python-nltk",
            "binary_version": "3.1-1ubuntu0.1+esm2"
        },
        {
            "binary_name": "python3-nltk",
            "binary_version": "3.1-1ubuntu0.1+esm2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-33230.json"
Ubuntu:Pro:18.04:LTS
nltk

Package

Name
nltk
Purl
pkg:deb/ubuntu/nltk@3.2.5-1ubuntu0.1+esm2?arch=source&distro=esm-apps/bionic

Affected ranges

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

Affected versions

3.*
3.2.4-1
3.2.5-1
3.2.5-1ubuntu0.1
3.2.5-1ubuntu0.1+esm1
3.2.5-1ubuntu0.1+esm2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "python-nltk",
            "binary_version": "3.2.5-1ubuntu0.1+esm2"
        },
        {
            "binary_name": "python3-nltk",
            "binary_version": "3.2.5-1ubuntu0.1+esm2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-33230.json"
Ubuntu:Pro:20.04:LTS
nltk

Package

Name
nltk
Purl
pkg:deb/ubuntu/nltk@3.4.5-2ubuntu0.1~esm2?arch=source&distro=esm-apps/focal

Affected ranges

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

Affected versions

3.*
3.4.5-1
3.4.5-2
3.4.5-2ubuntu0.1~esm1
3.4.5-2ubuntu0.1~esm2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "python3-nltk",
            "binary_version": "3.4.5-2ubuntu0.1~esm2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-33230.json"