{
    "CVE_data_meta": {
        "ASSIGNER": "security-advisories@github.com",
        "ID": "CVE-2021-32622",
        "STATE": "PUBLIC",
        "TITLE": "File upload local preview can run embedded scripts after user interaction"
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "product": {
                        "product_data": [
                            {
                                "product_name": "matrix-react-sdk",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_value": "< 3.21.0"
                                        }
                                    ]
                                }
                            }
                        ]
                    },
                    "vendor_name": "matrix-org"
                }
            ]
        }
    },
    "data_format": "MITRE",
    "data_type": "CVE",
    "data_version": "4.0",
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "Matrix-React-SDK is a react-based SDK for inserting a Matrix chat/voip client into a web page. Before version 3.21.0, when uploading a file, the local file preview can lead to execution of scripts embedded in the uploaded file. This can only occur after several user interactions to open the preview in a separate tab. This only impacts the local user while in the process of uploading. It cannot be exploited remotely or by other users. This vulnerability is patched in version 3.21.0."
            }
        ]
    },
    "impact": {
        "cvss": {
            "attackComplexity": "HIGH",
            "attackVector": "LOCAL",
            "availabilityImpact": "LOW",
            "baseScore": 4.2,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:L",
            "version": "3.1"
        }
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')"
                    }
                ]
            }
        ]
    },
    "references": {
        "reference_data": [
            {
                "name": "https://github.com/matrix-org/matrix-react-sdk/security/advisories/GHSA-8796-gc9j-63rv",
                "refsource": "CONFIRM",
                "url": "https://github.com/matrix-org/matrix-react-sdk/security/advisories/GHSA-8796-gc9j-63rv"
            },
            {
                "name": "https://github.com/matrix-org/matrix-react-sdk/pull/5981",
                "refsource": "MISC",
                "url": "https://github.com/matrix-org/matrix-react-sdk/pull/5981"
            }
        ]
    },
    "source": {
        "advisory": "GHSA-8796-gc9j-63rv",
        "discovery": "UNKNOWN"
    }
}