{
  "cveId": "CVE-2026-33230",
  "url": "https://patchblox.com/security/cve/CVE-2026-33230",
  "summary": "CVE-2026-33230 is fixed in 3 products on 1 platform, first by python-nltk 3.2.5-1ubuntu0.1\u002Besm4, released March 20, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "nltk: NLTK (Natural Language Toolkit) is a suite of open source Python modules, data sets, and tutorials supporting researc...",
  "description": "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, \u0060nltk.app.wordnet_app\u0060 contains a reflected cross-site scripting issue in the \u0060lookup_...\u0060 route. A crafted \u0060lookup_\u003Cpayload\u003E\u0060 URL can inject arbitrary HTML/JavaScript into the response page because attacker-controlled \u0060word\u0060 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.",
  "published": "2026-03-20T16:16:00Z",
  "severity": "medium",
  "cvss": 6.1,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
  "epss": 0.00344,
  "epssPercentile": 0.28122,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "nltk",
      "release": "Debian 14",
      "fixedVersion": "3.10.0-1",
      "fix": "DEBIAN-CVE-2026-33230",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-33230",
      "released": "2026-03-20T23:16:46Z"
    },
    {
      "platform": "linux",
      "product": "python-nltk",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "3.2.5-1ubuntu0.1\u002Besm4",
      "fix": "python-nltk 3.2.5-1ubuntu0.1\u002Besm4",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-python-nltk-3.2.5-1ubuntu0.1-esm4",
      "released": "2026-03-20T16:16:00Z"
    },
    {
      "platform": "linux",
      "product": "python3-nltk",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "3.2.5-1ubuntu0.1\u002Besm4",
      "fix": "python3-nltk 3.2.5-1ubuntu0.1\u002Besm4",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-python3-nltk-3.2.5-1ubuntu0.1-esm4",
      "released": "2026-03-20T16:16:00Z"
    },
    {
      "platform": "linux",
      "product": "python3-nltk",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "3.4.5-2ubuntu0.1~esm4",
      "fix": "python3-nltk 3.4.5-2ubuntu0.1~esm4",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-python3-nltk-3.4.5-2ubuntu0.1-esm4",
      "released": "2026-03-20T16:16:00Z"
    },
    {
      "platform": "linux",
      "product": "python3-nltk",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "3.7-1ubuntu0.1~esm2",
      "fix": "python3-nltk 3.7-1ubuntu0.1~esm2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-python3-nltk-3.7-1ubuntu0.1-esm2",
      "released": "2026-03-20T16:16:00Z"
    },
    {
      "platform": "linux",
      "product": "python3-nltk",
      "release": "Ubuntu 24.04.5 LTS (noble)",
      "fixedVersion": "3.8.1-1ubuntu0.1~esm2",
      "fix": "python3-nltk 3.8.1-1ubuntu0.1~esm2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-noble-python3-nltk-3.8.1-1ubuntu0.1-esm2",
      "released": "2026-03-20T16:16:00Z"
    },
    {
      "platform": "linux",
      "product": "python3-nltk",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "3.9.2-1ubuntu0.1~esm2",
      "fix": "python3-nltk 3.9.2-1ubuntu0.1~esm2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-python3-nltk-3.9.2-1ubuntu0.1-esm2",
      "released": "2026-03-20T16:16:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T19:12:23Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}