{
    "CVE_data_meta": {
        "ASSIGNER": "security-advisories@github.com",
        "ID": "CVE-2021-21241",
        "STATE": "PUBLIC",
        "TITLE": "CSRF can expose users authentication token in Flask-Security-Too"
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "product": {
                        "product_data": [
                            {
                                "product_name": "flask-security-too",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_value": ">= 3.3.0, < 3.4.5"
                                        }
                                    ]
                                }
                            }
                        ]
                    },
                    "vendor_name": "Flask-Middleware"
                }
            ]
        }
    },
    "data_format": "MITRE",
    "data_type": "CVE",
    "data_version": "4.0",
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "The Python \"Flask-Security-Too\" package is used for adding security features to your Flask application. It is an is a independently maintained version of Flask-Security based on the 3.0.0 version of Flask-Security. In Flask-Security-Too from version 3.3.0 and before version 3.4.5, the /login and /change endpoints can return the authenticated user's authentication token in response to a GET request. Since GET requests aren't protected with a CSRF token, this could lead to a malicious 3rd party site acquiring the authentication token. Version 3.4.5 and version 4.0.0 are patched. As a workaround, if you aren't using authentication tokens - you can set the SECURITY_TOKEN_MAX_AGE to \"0\" (seconds) which should make the token unusable."
            }
        ]
    },
    "impact": {
        "cvss": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 7.4,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N",
            "version": "3.1"
        }
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "CWE-352: Cross-Site Request Forgery (CSRF)"
                    }
                ]
            }
        ]
    },
    "references": {
        "reference_data": [
            {
                "name": "https://github.com/Flask-Middleware/flask-security/security/advisories/GHSA-hh7m-rx4f-4vpv",
                "refsource": "CONFIRM",
                "url": "https://github.com/Flask-Middleware/flask-security/security/advisories/GHSA-hh7m-rx4f-4vpv"
            },
            {
                "name": "https://github.com/Flask-Middleware/flask-security/pull/422",
                "refsource": "MISC",
                "url": "https://github.com/Flask-Middleware/flask-security/pull/422"
            },
            {
                "name": "https://github.com/Flask-Middleware/flask-security/commit/61d313150b5f620d0b800896c4f2199005e84b1f",
                "refsource": "MISC",
                "url": "https://github.com/Flask-Middleware/flask-security/commit/61d313150b5f620d0b800896c4f2199005e84b1f"
            },
            {
                "name": "https://github.com/Flask-Middleware/flask-security/commit/6d50ee9169acf813257c37b75babe9c28e83542a",
                "refsource": "MISC",
                "url": "https://github.com/Flask-Middleware/flask-security/commit/6d50ee9169acf813257c37b75babe9c28e83542a"
            },
            {
                "name": "https://github.com/Flask-Middleware/flask-security/releases/tag/3.4.5",
                "refsource": "MISC",
                "url": "https://github.com/Flask-Middleware/flask-security/releases/tag/3.4.5"
            },
            {
                "name": "https://pypi.org/project/Flask-Security-Too",
                "refsource": "MISC",
                "url": "https://pypi.org/project/Flask-Security-Too"
            }
        ]
    },
    "source": {
        "advisory": "GHSA-hh7m-rx4f-4vpv",
        "discovery": "UNKNOWN"
    }
}