{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-116688",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-10-26T20:00:59.830Z",
        "datePublished": "2026-10-27T19:36:28.906Z",
        "dateUpdated": "2026-10-27T19:36:28.906Z"
    },
    "containers": {
        "cna": {
            "title": "CKEditor: Cross-site scripting (XSS) in the engine package",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-79",
                            "lang": "en",
                            "description": "CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "attackComplexity": "LOW",
                        "attackVector": "NETWORK",
                        "availabilityImpact": "NONE",
                        "baseScore": 8.1,
                        "baseSeverity": "HIGH",
                        "confidentialityImpact": "HIGH",
                        "integrityImpact": "HIGH",
                        "privilegesRequired": "LOW",
                        "scope": "UNCHANGED",
                        "userInteraction": "NONE",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N",
                        "version": "3.1"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/ckeditor/ckeditor5/security/advisories/GHSA-rh54-vffm-5fvp",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/ckeditor/ckeditor5/security/advisories/GHSA-rh54-vffm-5fvp"
                },
                {
                    "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"
                }
            ],
            "affected": [
                {
                    "vendor": "ckeditor",
                    "product": "ckeditor5",
                    "versions": [
                        {
                            "version": ">= 45.0.0, < 47.7.4",
                            "status": "affected"
                        },
                        {
                            "version": ">= 48.0.0, < 48.5.1",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-10-27T19:36:28.906Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "CKEditor 5 is a modern JavaScript rich-text editor with an MVC architecture. From 45.0.0 until 47.7.4 and 48.5.1, the engine uses a vulnerable es-toolkit version whose prototype-pollution behavior can be reached while CKEditor processes incoming style attribute values. Crafted editor content can thereby cause unauthorized JavaScript execution in the browser. This issue is fixed in versions 47.7.4 and 48.5.1."
                }
            ],
            "source": {
                "advisory": "GHSA-rh54-vffm-5fvp",
                "discovery": "UNKNOWN"
            }
        }
    }
}