ckeditor — security advisory

{
  "id": "f900d72fee0b96305571a9d9ad69753cb6339068131989ac50d204c1952089fc",
  "url": "https://osv.dev/vulnerability/DEBIAN-CVE-2021-32809",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "DEBIAN-CVE-2021-32809",
    "summary": "ckeditor is an open source WYSIWYG HTML editor with rich content support. A 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. The problem has been recognized and patched. The fix will be available in version 4.16.2.",
    "evidence": "osv:DEBIAN-CVE-2021-32809",
    "products": [
      {
        "name": {
          "value": "ckeditor",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "4.16.2+dfsg-1",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "medium",
    "structured": {
      "id": "DEBIAN-CVE-2021-32809",
      "aliases": [
        "DEBIAN-CVE-2021-32809"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "4.16.2+dfsg-1"
                }
              ]
            }
          ],
          "package": {
            "name": "ckeditor",
            "purl": "pkg:deb/debian/ckeditor?arch=source&distro=bookworm",
            "ecosystem": "Debian:12"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2021-32809.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        }
      ],
      "modified": "2026-10-23T18:03:14.017290439Z",
      "provider": "osv",
      "upstream": [
        "CVE-2021-32809"
      ],
      "references": [
        "https://security-tracker.debian.org/tracker/CVE-2021-32809"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2021-32809",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 420881,
  "published_at": "2021-08-12T17:15:08.167+00:00"
}