{
    "CVE_data_meta": {
        "ASSIGNER": "security-advisories@github.com",
        "ID": "CVE-2020-5255",
        "STATE": "PUBLIC",
        "TITLE": "Prevent cache poisoning via a Response Content-Type header"
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "vendor_name": "symfony",
                    "product": {
                        "product_data": [
                            {
                                "product_name": "symfony",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_value": ">= 4.4.0 and < 4.4.7"
                                        },
                                        {
                                            "version_value": ">= 5.0.0 and < 5.0.7"
                                        }
                                    ]
                                }
                            }
                        ]
                    }
                }
            ]
        }
    },
    "data_format": "MITRE",
    "data_type": "CVE",
    "data_version": "4.0",
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "In Symfony before versions 4.4.7 and 5.0.7, when a `Response` does not contain a `Content-Type` header, affected versions of Symfony can fallback to the format defined in the `Accept` header of the request, leading to a possible mismatch between the response&#39;s content and `Content-Type` header. When the response is cached, this can prevent the use of the website by other users. This has been patched in versions 4.4.7 and 5.0.7."
            }
        ]
    },
    "impact": {
        "cvss": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "LOW",
            "baseScore": 2.6,
            "baseSeverity": "LOW",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:N/A:L",
            "version": "3.1"
        }
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "CWE-435 Improper Interaction Between Multiple Correctly-Behaving Entities"
                    }
                ]
            }
        ]
    },
    "references": {
        "reference_data": [
            {
                "name": "https://github.com/symfony/symfony/security/advisories/GHSA-mcx4-f5f5-4859",
                "refsource": "CONFIRM",
                "url": "https://github.com/symfony/symfony/security/advisories/GHSA-mcx4-f5f5-4859"
            },
            {
                "name": "https://github.com/symfony/symfony/commit/dca343442e6a954f96a2609e7b4e9c21ed6d74e6",
                "refsource": "MISC",
                "url": "https://github.com/symfony/symfony/commit/dca343442e6a954f96a2609e7b4e9c21ed6d74e6"
            },
            {
                "refsource": "MISC",
                "name": "https://symfony.com/blog/cve-2020-5255-prevent-cache-poisoning-via-a-response-content-type-header",
                "url": "https://symfony.com/blog/cve-2020-5255-prevent-cache-poisoning-via-a-response-content-type-header"
            },
            {
                "refsource": "FEDORA",
                "name": "FEDORA-2020-fade6a8df7",
                "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/C36JLPHUPKDFAX6D5WYFC4ALO2K7RDUQ/"
            }
        ]
    },
    "source": {
        "advisory": "GHSA-mcx4-f5f5-4859",
        "discovery": "UNKNOWN"
    }
}