{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "ckeditor5",
          "vendor": "ckeditor",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 29.0.0, \u003c 47.7.4"
            },
            {
              "status": "affected",
              "version": "\u003e= 48.0.0, \u003c 48.5.1"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "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."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 3.1,
            "baseSeverity": "LOW",
            "confidentialityImpact": "NONE",
            "integrityImpact": "LOW",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-79",
              "description": "CWE-79: Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-27T19:33:11.074Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/ckeditor/ckeditor5/security/advisories/GHSA-v6mg-96c6-gmpq",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/ckeditor/ckeditor5/security/advisories/GHSA-v6mg-96c6-gmpq"
        },
        {
          "name": "https://github.com/ckeditor/ckeditor5/commit/4d9c5bb34f63cd956d15ccafbe584e14280c86a0",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/ckeditor/ckeditor5/commit/4d9c5bb34f63cd956d15ccafbe584e14280c86a0"
        },
        {
          "name": "https://github.com/ckeditor/ckeditor5/commit/a750e38635db6a18c5b11599c09f4fd702850423",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/ckeditor/ckeditor5/commit/a750e38635db6a18c5b11599c09f4fd702850423"
        },
        {
          "name": "https://github.com/ckeditor/ckeditor5/releases/tag/v47.7.4",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/ckeditor/ckeditor5/releases/tag/v47.7.4"
        },
        {
          "name": "https://github.com/ckeditor/ckeditor5/releases/tag/v48.5.1",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/ckeditor/ckeditor5/releases/tag/v48.5.1"
        }
      ],
      "source": {
        "advisory": "GHSA-v6mg-96c6-gmpq",
        "discovery": "UNKNOWN"
      },
      "title": "CKEditor: Cross-site scripting (XSS) in the engine package"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-116687",
    "datePublished": "2026-10-27T19:33:11.074Z",
    "dateReserved": "2026-10-26T20:00:59.830Z",
    "dateUpdated": "2026-10-27T19:33:11.074Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}