{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "29.0.0"
                  },
                  {
                    "fixed": "47.7.4"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "StringRangeExpression"
              },
              {
                "range": [
                  {
                    "introduced": "48.0.0"
                  },
                  {
                    "fixed": "48.5.1"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "StringRangeExpression"
              },
              {
                "range": [
                  {
                    "fixed": "4d9c5bb34f63cd956d15ccafbe584e14280c86a0"
                  }
                ],
                "source": "REFERENCES_COMMIT"
              },
              {
                "range": [
                  {
                    "fixed": "a750e38635db6a18c5b11599c09f4fd702850423"
                  }
                ],
                "source": "REFERENCES_COMMIT"
              },
              {
                "original_tag": "v47.7.4",
                "range": [
                  {
                    "fixed": "909a99ede76b640b7b4780fadaff900b8a81a27e"
                  }
                ],
                "source": "REFERENCES_TAG"
              },
              {
                "original_tag": "v48.5.1",
                "range": [
                  {
                    "fixed": "1867f7a292a98e5740873b5f42f205d7414a0c5a"
                  }
                ],
                "source": "REFERENCES_TAG"
              }
            ]
          },
          "events": [
            {
              "introduced": "0947bb06998dd94f671caa80ade835bc7334ba87"
            },
            {
              "fixed": "909a99ede76b640b7b4780fadaff900b8a81a27e"
            },
            {
              "introduced": "d43f35a99e67308d76afa3a58c1ff25a2019ce07"
            },
            {
              "fixed": "1867f7a292a98e5740873b5f42f205d7414a0c5a"
            },
            {
              "fixed": "4d9c5bb34f63cd956d15ccafbe584e14280c86a0"
            },
            {
              "fixed": "a750e38635db6a18c5b11599c09f4fd702850423"
            }
          ],
          "repo": "https://github.com/ckeditor/ckeditor5",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-v6mg-96c6-gmpq"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-79"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/116xxx/CVE-2026-116687.json"
  },
  "details": "CKEditor 5 is a modern JavaScript rich-text editor with an MVC architecture. From 29.0.0 until 47.7.4 and 48.5.1, specially crafted markup can trigger cross-site scripting when General HTML Support is enabled and specifically configured to allow object content. Processing that content can execute attacker-controlled JavaScript in a browser context isolated from the origin of the application embedding the editor. This issue is fixed in versions 47.7.4 and 48.5.1.",
  "id": "CVE-2026-116687",
  "modified": "2026-10-28T10:30:37.573980521Z",
  "published": "2026-10-27T19:33:11.074Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/116xxx/CVE-2026-116687.json"
    },
    {
      "type": "FIX",
      "url": "https://github.com/ckeditor/ckeditor5/commit/4d9c5bb34f63cd956d15ccafbe584e14280c86a0"
    },
    {
      "type": "FIX",
      "url": "https://github.com/ckeditor/ckeditor5/commit/a750e38635db6a18c5b11599c09f4fd702850423"
    },
    {
      "type": "WEB",
      "url": "https://github.com/ckeditor/ckeditor5/releases/tag/v47.7.4"
    },
    {
      "type": "WEB",
      "url": "https://github.com/ckeditor/ckeditor5/releases/tag/v48.5.1"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/ckeditor/ckeditor5/security/advisories/GHSA-v6mg-96c6-gmpq"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-116687"
    }
  ],
  "schema_version": "1.9.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "CKEditor: Cross-site scripting (XSS) in the engine package"
}