CVE-2026-116687

{
  "id": "CVE-2026-116687",
  "sourceIdentifier": "[email protected]",
  "published": "2026-10-27T20:17:13.890",
  "lastModified": "2026-10-28T15:21:31.673",
  "vulnStatus": "Awaiting Analysis",
  "cveTags": [],
  "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."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "ckeditor",
          "product": "ckeditor5",
          "versions": [
            {
              "version": ">= 29.0.0, < 47.7.4",
              "status": "affected"
            },
            {
              "version": ">= 48.0.0, < 48.5.1",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N",
          "baseScore": 3.1,
          "baseSeverity": "LOW",
          "attackVector": "NETWORK",
          "attackComplexity": "HIGH",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "LOW",
          "availabilityImpact": "NONE"
        },
        "exploitabilityScore": 1.6,
        "impactScore": 1.4
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://github.com/ckeditor/ckeditor5/commit/4d9c5bb34f63cd956d15ccafbe584e14280c86a0",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/ckeditor/ckeditor5/commit/a750e38635db6a18c5b11599c09f4fd702850423",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/ckeditor/ckeditor5/releases/tag/v47.7.4",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/ckeditor/ckeditor5/releases/tag/v48.5.1",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/ckeditor/ckeditor5/security/advisories/GHSA-v6mg-96c6-gmpq",
      "source": "[email protected]"
    }
  ]
}