{
  "schema_version": "1.4.0",
  "id": "GHSA-7889-rm5j-hpgg",
  "modified": "2022-02-08T21:01:48Z",
  "published": "2021-08-23T19:40:57Z",
  "aliases": [
    "CVE-2021-32809"
  ],
  "summary": "Clipboard feature vulnerability allowing to inject arbitrary HTML into the editor using paste functionality",
  "details": "### Affected packages\nThe vulnerability has been discovered in [clipboard](https://ckeditor.com/cke4/addon/clipboard) plugin. All plugins with [clipboard](https://ckeditor.com/cke4/addon/clipboard) plugin dependency are affected:\n\n* [clipboard](https://ckeditor.com/cke4/addon/clipboard)\n* [pastetext](https://ckeditor.com/cke4/addon/pastetext)\n* [pastetools](https://ckeditor.com/cke4/addon/pastetools)\n* [widget](https://ckeditor.com/cke4/addon/widget)\n* [uploadwidget](https://ckeditor.com/cke4/addon/uploadwidget)\n* [autolink](https://ckeditor.com/cke4/addon/autolink)\n* [tableselection](https://ckeditor.com/cke4/addon/tableselection)\n\n### Impact\nA potential vulnerability has been discovered in CKEditor 4 [Clipboard](https://ckeditor.com/cke4/addon/clipboard) package. The vulnerability allowed to abuse paste functionality using malformed HTML, which could result in injecting arbitrary HTML into the editor. It affects all users using the CKEditor 4 plugins listed above at version >= 4.5.2.\n\n### Patches\nThe problem has been recognized and patched. The fix will be available in version 4.16.2.\n\n### For more information\nEmail us at security@cksource.com if you have any questions or comments about this advisory.\n\n### Acknowledgements\nThe CKEditor 4 team would like to thank Anton Subbotin ([skavans](https://github.com/skavans)) for recognizing and reporting this vulnerability.\n",
  "severity": [
    {
      "type": "CVSS_V3",
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N"
    }
  ],
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "ckeditor4"
      },
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "4.5.2"
            },
            {
              "fixed": "4.16.2"
            }
          ]
        }
      ]
    }
  ],
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/ckeditor/ckeditor4/security/advisories/GHSA-7889-rm5j-hpgg"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-32809"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/ckeditor/ckeditor4"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NYA354LJP47KCVJMTUO77ZCX3ZK42G3T"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UVOYN2WKDPLKCNILIGEZM236ABQASLGW"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WAGNWHFIQAVCP537KFFS2A2GDG66J7XD"
    },
    {
      "type": "WEB",
      "url": "https://www.oracle.com/security-alerts/cpujan2022.html"
    },
    {
      "type": "WEB",
      "url": "https://www.oracle.com/security-alerts/cpuoct2021.html"
    }
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-79",
      "CWE-94"
    ],
    "severity": "MODERATE",
    "github_reviewed": true,
    "github_reviewed_at": "2021-08-23T16:49:10Z",
    "nvd_published_at": "2021-08-12T17:15:00Z"
  }
}