{
    "CVE_data_meta": {
        "ASSIGNER": "cve@mitre.org",
        "ID": "CVE-2021-33503",
        "STATE": "PUBLIC"
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "product": {
                        "product_data": [
                            {
                                "product_name": "n/a",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_value": "n/a"
                                        }
                                    ]
                                }
                            }
                        ]
                    },
                    "vendor_name": "n/a"
                }
            ]
        }
    },
    "data_format": "MITRE",
    "data_type": "CVE",
    "data_version": "4.0",
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "An issue was discovered in urllib3 before 1.26.5. When provided with a URL containing many @ characters in the authority component, the authority regular expression exhibits catastrophic backtracking, causing a denial of service if a URL were passed as a parameter or redirected to via an HTTP redirect."
            }
        ]
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "n/a"
                    }
                ]
            }
        ]
    },
    "references": {
        "reference_data": [
            {
                "refsource": "FEDORA",
                "name": "FEDORA-2021-a6bde7ab18",
                "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FMUGWEAUYGGHTPPXT6YBD53WYXQGVV73/"
            },
            {
                "refsource": "FEDORA",
                "name": "FEDORA-2021-9c5f3b8aae",
                "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/6SCV7ZNAHS3E6PBFLJGENCDRDRWRZZ6W/"
            },
            {
                "refsource": "GENTOO",
                "name": "GLSA-202107-36",
                "url": "https://security.gentoo.org/glsa/202107-36"
            },
            {
                "url": "https://www.oracle.com/security-alerts/cpuoct2021.html",
                "refsource": "MISC",
                "name": "https://www.oracle.com/security-alerts/cpuoct2021.html"
            },
            {
                "refsource": "CONFIRM",
                "name": "https://github.com/advisories/GHSA-q2q7-5pp4-w6pg",
                "url": "https://github.com/advisories/GHSA-q2q7-5pp4-w6pg"
            },
            {
                "refsource": "CONFIRM",
                "name": "https://github.com/urllib3/urllib3/commit/2d4a3fee6de2fa45eb82169361918f759269b4ec",
                "url": "https://github.com/urllib3/urllib3/commit/2d4a3fee6de2fa45eb82169361918f759269b4ec"
            }
        ]
    }
}