{
  "cveId": "CVE-2021-33391",
  "url": "https://patchblox.com/security/cve/CVE-2021-33391",
  "summary": "CVE-2021-33391 is fixed in 4 products on 1 platform, first by libtidy5deb1 2:5.6.0-11ubuntu0.20.04.1, released February 17, 2023. It is not reported as exploited. Patch Radar priority: High.",
  "title": "tidy: An issue in HTACG HTML Tidy v5.7.28 allows attacker to execute arbitrarycode via the -g option of the CleanNode() fun...",
  "description": "An issue in HTACG HTML Tidy v5.7.28 allows attacker to execute arbitrarycode via the -g option of the CleanNode() function in gdoc.c.",
  "published": "2023-02-17T10:15:00Z",
  "severity": "Medium",
  "cvss": 9.8,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
  "epss": 0.01128,
  "epssPercentile": 0.66573,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "libtidy58",
      "release": "Ubuntu 25.04 (plucky)",
      "fixedVersion": "2:5.6.0-11ubuntu1",
      "fix": "libtidy58 2:5.6.0-11ubuntu1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-plucky-libtidy58-2-5.6.0-11ubuntu1",
      "released": "2026-01-16T01:42:24Z"
    },
    {
      "platform": "linux",
      "product": "libtidy5deb1",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "2:5.6.0-11ubuntu0.20.04.1",
      "fix": "libtidy5deb1 2:5.6.0-11ubuntu0.20.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-libtidy5deb1-2-5.6.0-11ubuntu0.20.04.1",
      "released": "2023-02-17T10:15:00Z"
    },
    {
      "platform": "linux",
      "product": "libtidy5deb1",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "2:5.6.0-11ubuntu0.22.04.1",
      "fix": "libtidy5deb1 2:5.6.0-11ubuntu0.22.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-libtidy5deb1-2-5.6.0-11ubuntu0.22.04.1",
      "released": "2023-02-17T10:15:00Z"
    },
    {
      "platform": "linux",
      "product": "libtidy5deb1",
      "release": "Ubuntu 24.04.5 LTS (noble)",
      "fixedVersion": "2:5.6.0-11ubuntu1",
      "fix": "libtidy5deb1 2:5.6.0-11ubuntu1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-noble-libtidy5deb1-2-5.6.0-11ubuntu1",
      "released": "2023-02-17T10:15:00Z"
    },
    {
      "platform": "linux",
      "product": "libtidy5deb1",
      "release": "Ubuntu 24.10 (oracular)",
      "fixedVersion": "2:5.6.0-11ubuntu1",
      "fix": "libtidy5deb1 2:5.6.0-11ubuntu1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-oracular-libtidy5deb1-2-5.6.0-11ubuntu1",
      "released": "2026-01-16T01:42:22Z"
    },
    {
      "platform": "linux",
      "product": "tidy",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "2:5.6.0-11ubuntu0.20.04.1",
      "fix": "tidy 2:5.6.0-11ubuntu0.20.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-tidy-2-5.6.0-11ubuntu0.20.04.1",
      "released": "2023-02-17T10:15:00Z"
    },
    {
      "platform": "linux",
      "product": "tidy",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "2:5.6.0-11ubuntu0.22.04.1",
      "fix": "tidy 2:5.6.0-11ubuntu0.22.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-tidy-2-5.6.0-11ubuntu0.22.04.1",
      "released": "2023-02-17T10:15:00Z"
    },
    {
      "platform": "linux",
      "product": "tidy",
      "release": "Ubuntu 24.04.5 LTS (noble)",
      "fixedVersion": "2:5.6.0-11ubuntu1",
      "fix": "tidy 2:5.6.0-11ubuntu1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-noble-tidy-2-5.6.0-11ubuntu1",
      "released": "2023-02-17T10:15:00Z"
    },
    {
      "platform": "linux",
      "product": "tidy",
      "release": "Ubuntu 24.10 (oracular)",
      "fixedVersion": "2:5.6.0-11ubuntu1",
      "fix": "tidy 2:5.6.0-11ubuntu1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-oracular-tidy-2-5.6.0-11ubuntu1",
      "released": "2026-01-16T01:42:22Z"
    },
    {
      "platform": "linux",
      "product": "tidy",
      "release": "Ubuntu 25.04 (plucky)",
      "fixedVersion": "2:5.6.0-11ubuntu1",
      "fix": "tidy 2:5.6.0-11ubuntu1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-plucky-tidy-2-5.6.0-11ubuntu1",
      "released": "2026-01-16T01:42:24Z"
    },
    {
      "platform": "linux",
      "product": "tidy-html5",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "2:5.8.0-2",
      "fix": "DEBIAN-CVE-2021-33391",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-33391",
      "released": "2023-02-17T18:15:11Z"
    },
    {
      "platform": "linux",
      "product": "tidy-html5",
      "release": "Debian 14",
      "fixedVersion": "2:5.8.0-2",
      "fix": "DEBIAN-CVE-2021-33391",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2021-33391",
      "released": "2023-02-17T18:15:11Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T01:18:40Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}