{
    "CVE_data_meta": {
        "ASSIGNER": "security-advisories@github.com",
        "ID": "CVE-2021-43818",
        "STATE": "PUBLIC",
        "TITLE": "HTML Cleaner allows crafted and SVG embedded scripts to pass through"
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "product": {
                        "product_data": [
                            {
                                "product_name": "lxml",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_value": "< 4.6.5"
                                        }
                                    ]
                                }
                            }
                        ]
                    },
                    "vendor_name": "lxml"
                }
            ]
        }
    },
    "data_format": "MITRE",
    "data_type": "CVE",
    "data_version": "4.0",
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "lxml is a library for processing XML and HTML in the Python language. Prior to version 4.6.5, the HTML Cleaner in lxml.html lets certain crafted script content pass through, as well as script content in SVG files embedded using data URIs. Users that employ the HTML cleaner in a security relevant context should upgrade to lxml 4.6.5 to receive a patch. There are no known workarounds available."
            }
        ]
    },
    "impact": {
        "cvss": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 8.2,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "LOW",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:H/A:N",
            "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')"
                    }
                ]
            },
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')"
                    }
                ]
            }
        ]
    },
    "references": {
        "reference_data": [
            {
                "name": "https://github.com/lxml/lxml/security/advisories/GHSA-55x5-fj6c-h6m8",
                "refsource": "CONFIRM",
                "url": "https://github.com/lxml/lxml/security/advisories/GHSA-55x5-fj6c-h6m8"
            },
            {
                "name": "https://github.com/lxml/lxml/commit/12fa9669007180a7bb87d990c375cf91ca5b664a",
                "refsource": "MISC",
                "url": "https://github.com/lxml/lxml/commit/12fa9669007180a7bb87d990c375cf91ca5b664a"
            },
            {
                "name": "https://github.com/lxml/lxml/commit/a3eacbc0dcf1de1c822ec29fb7d090a4b1712a9c#diff-59130575b4fb2932c957db2922977d7d89afb0b2085357db1a14615a2fcad776",
                "refsource": "MISC",
                "url": "https://github.com/lxml/lxml/commit/a3eacbc0dcf1de1c822ec29fb7d090a4b1712a9c#diff-59130575b4fb2932c957db2922977d7d89afb0b2085357db1a14615a2fcad776"
            },
            {
                "name": "https://github.com/lxml/lxml/commit/f2330237440df7e8f39c3ad1b1aa8852be3b27c0",
                "refsource": "MISC",
                "url": "https://github.com/lxml/lxml/commit/f2330237440df7e8f39c3ad1b1aa8852be3b27c0"
            },
            {
                "refsource": "FEDORA",
                "name": "FEDORA-2021-6e8fb79f90",
                "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZQ4SPKJX3RRJK4UWA6FXCRHD2TVRQI44/"
            },
            {
                "refsource": "FEDORA",
                "name": "FEDORA-2021-9f9e7c5c4f",
                "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WZGNET2A4WGLSUXLBFYKNC5PXHQMI3I7/"
            },
            {
                "refsource": "MLIST",
                "name": "[debian-lts-announce] 20211230 [SECURITY] [DLA 2871-1] lxml security update",
                "url": "https://lists.debian.org/debian-lts-announce/2021/12/msg00037.html"
            },
            {
                "refsource": "DEBIAN",
                "name": "DSA-5043",
                "url": "https://www.debian.org/security/2022/dsa-5043"
            },
            {
                "refsource": "FEDORA",
                "name": "FEDORA-2022-96c79bf003",
                "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TUIS2KE3HZ2AAQKXFLTJFZPP2IFHJTC7/"
            },
            {
                "refsource": "FEDORA",
                "name": "FEDORA-2022-7129fbaeed",
                "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/V2XMOM5PFT6U5AAXY6EFNT5JZCKKHK2V/"
            },
            {
                "url": "https://www.oracle.com/security-alerts/cpuapr2022.html",
                "refsource": "MISC",
                "name": "https://www.oracle.com/security-alerts/cpuapr2022.html"
            },
            {
                "refsource": "CONFIRM",
                "name": "https://security.netapp.com/advisory/ntap-20220107-0005/",
                "url": "https://security.netapp.com/advisory/ntap-20220107-0005/"
            },
            {
                "url": "https://www.oracle.com/security-alerts/cpujul2022.html",
                "refsource": "MISC",
                "name": "https://www.oracle.com/security-alerts/cpujul2022.html"
            },
            {
                "refsource": "GENTOO",
                "name": "GLSA-202208-06",
                "url": "https://security.gentoo.org/glsa/202208-06"
            }
        ]
    },
    "source": {
        "advisory": "GHSA-55x5-fj6c-h6m8",
        "discovery": "UNKNOWN"
    }
}