{
  "document": {
    "aggregate_severity": {
      "text": "Important"
    },
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "distribution": {
      "text": "TuxCare License Agreement",
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "en",
    "notes": [
      {
        "category": "legal_disclaimer",
        "text": "This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Cloud Linux Inc. and provide a link to the original.",
        "title": "Terms of Use"
      },
      {
        "category": "details",
        "text": "CVE-2021-43818: prevent certain crafted script content passing\n  through in HTML Cleaner",
        "title": "Details"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "https://tuxcare.com/contact/",
      "name": "TuxCare",
      "namespace": "https://tuxcare.com/"
    },
    "references": [
      {
        "category": "self",
        "summary": "https://cve.tuxcare.com/els/releases/CLSA-2024:1729629058",
        "url": "https://cve.tuxcare.com/els/releases/CLSA-2024:1729629058"
      },
      {
        "category": "self",
        "summary": "Canonical URL",
        "url": "https://security.tuxcare.com/csaf/v2/els_os/centos7els/advisories/2024/clsa-2024_1729629058.json"
      }
    ],
    "tracking": {
      "current_release_date": "2026-05-05T11:18:54Z",
      "generator": {
        "date": "2026-05-05T11:18:54Z",
        "engine": {
          "name": "pyCSAF"
        }
      },
      "id": "CLSA-2024:1729629058",
      "initial_release_date": "2024-10-22T16:31:01Z",
      "revision_history": [
        {
          "date": "2024-10-22T16:31:01Z",
          "number": "1",
          "summary": "Initial version"
        },
        {
          "date": "2026-05-05T11:18:54Z",
          "number": "2",
          "summary": "Official Publication"
        }
      ],
      "status": "final",
      "version": "2"
    },
    "title": "python-lxml: Fix of CVE-2021-43818"
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_name",
                "name": "Community Enterprise Operating System 7",
                "product": {
                  "name": "Community Enterprise Operating System 7",
                  "product_id": "CentOS-7",
                  "product_identification_helper": {
                    "cpe": "cpe:2.3:o:centos:centos:7:*:*:*:*:*:*:*"
                  }
                }
              }
            ],
            "category": "product_family",
            "name": "Community Enterprise Operating System"
          }
        ],
        "category": "vendor",
        "name": "Red Hat, Inc."
      },
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version",
                "name": "python-lxml-docs-0:3.2.1-4.el7.tuxcare.els1.noarch",
                "product": {
                  "name": "python-lxml-docs-0:3.2.1-4.el7.tuxcare.els1.noarch",
                  "product_id": "python-lxml-docs-0:3.2.1-4.el7.tuxcare.els1.noarch",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/tuxcare/python-lxml-docs@3.2.1-4.el7.tuxcare.els1?arch=noarch"
                  }
                }
              }
            ],
            "category": "architecture",
            "name": "noarch"
          },
          {
            "branches": [
              {
                "category": "product_version",
                "name": "python-lxml-0:3.2.1-4.el7.tuxcare.els1.x86_64",
                "product": {
                  "name": "python-lxml-0:3.2.1-4.el7.tuxcare.els1.x86_64",
                  "product_id": "python-lxml-0:3.2.1-4.el7.tuxcare.els1.x86_64",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/tuxcare/python-lxml@3.2.1-4.el7.tuxcare.els1?arch=x86_64"
                  }
                }
              }
            ],
            "category": "architecture",
            "name": "x86_64"
          }
        ],
        "category": "vendor",
        "name": "TuxCare"
      }
    ],
    "relationships": [
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "python-lxml-docs-0:3.2.1-4.el7.tuxcare.els1.noarch as a component of Community Enterprise Operating System 7",
          "product_id": "CentOS-7:python-lxml-docs-0:3.2.1-4.el7.tuxcare.els1.noarch"
        },
        "product_reference": "python-lxml-docs-0:3.2.1-4.el7.tuxcare.els1.noarch",
        "relates_to_product_reference": "CentOS-7"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "python-lxml-0:3.2.1-4.el7.tuxcare.els1.x86_64 as a component of Community Enterprise Operating System 7",
          "product_id": "CentOS-7:python-lxml-0:3.2.1-4.el7.tuxcare.els1.x86_64"
        },
        "product_reference": "python-lxml-0:3.2.1-4.el7.tuxcare.els1.x86_64",
        "relates_to_product_reference": "CentOS-7"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2021-43818",
      "cwe": {
        "id": "CWE-74",
        "name": "Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')"
      },
      "notes": [
        {
          "category": "description",
          "text": "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.",
          "title": "Vulnerability description"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
      "product_status": {
        "fixed": [
          "CentOS-7:python-lxml-0:3.2.1-4.el7.tuxcare.els1.x86_64",
          "CentOS-7:python-lxml-docs-0:3.2.1-4.el7.tuxcare.els1.noarch"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://cve.tuxcare.com/els/cve/CVE-2021-43818"
        },
        {
          "category": "external",
          "summary": "https://github.com/lxml/lxml/commit/12fa9669007180a7bb87d990c375cf91ca5b664a",
          "url": "https://github.com/lxml/lxml/commit/12fa9669007180a7bb87d990c375cf91ca5b664a"
        },
        {
          "category": "external",
          "summary": "https://github.com/lxml/lxml/commit/a3eacbc0dcf1de1c822ec29fb7d090a4b1712a9c#diff-59130575b4fb2932c957db2922977d7d89afb0b2085357db1a14615a2fcad776",
          "url": "https://github.com/lxml/lxml/commit/a3eacbc0dcf1de1c822ec29fb7d090a4b1712a9c#diff-59130575b4fb2932c957db2922977d7d89afb0b2085357db1a14615a2fcad776"
        },
        {
          "category": "external",
          "summary": "https://github.com/lxml/lxml/commit/f2330237440df7e8f39c3ad1b1aa8852be3b27c0",
          "url": "https://github.com/lxml/lxml/commit/f2330237440df7e8f39c3ad1b1aa8852be3b27c0"
        },
        {
          "category": "external",
          "summary": "https://github.com/lxml/lxml/security/advisories/GHSA-55x5-fj6c-h6m8",
          "url": "https://github.com/lxml/lxml/security/advisories/GHSA-55x5-fj6c-h6m8"
        },
        {
          "category": "external",
          "summary": "https://lists.debian.org/debian-lts-announce/2021/12/msg00037.html",
          "url": "https://lists.debian.org/debian-lts-announce/2021/12/msg00037.html"
        },
        {
          "category": "external",
          "summary": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TUIS2KE3HZ2AAQKXFLTJFZPP2IFHJTC7/",
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TUIS2KE3HZ2AAQKXFLTJFZPP2IFHJTC7/"
        },
        {
          "category": "external",
          "summary": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/V2XMOM5PFT6U5AAXY6EFNT5JZCKKHK2V/",
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/V2XMOM5PFT6U5AAXY6EFNT5JZCKKHK2V/"
        },
        {
          "category": "external",
          "summary": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WZGNET2A4WGLSUXLBFYKNC5PXHQMI3I7/",
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WZGNET2A4WGLSUXLBFYKNC5PXHQMI3I7/"
        },
        {
          "category": "external",
          "summary": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZQ4SPKJX3RRJK4UWA6FXCRHD2TVRQI44/",
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZQ4SPKJX3RRJK4UWA6FXCRHD2TVRQI44/"
        },
        {
          "category": "external",
          "summary": "https://security.gentoo.org/glsa/202208-06",
          "url": "https://security.gentoo.org/glsa/202208-06"
        },
        {
          "category": "external",
          "summary": "https://security.netapp.com/advisory/ntap-20220107-0005/",
          "url": "https://security.netapp.com/advisory/ntap-20220107-0005/"
        },
        {
          "category": "external",
          "summary": "https://www.debian.org/security/2022/dsa-5043",
          "url": "https://www.debian.org/security/2022/dsa-5043"
        },
        {
          "category": "external",
          "summary": "https://www.oracle.com/security-alerts/cpuapr2022.html",
          "url": "https://www.oracle.com/security-alerts/cpuapr2022.html"
        },
        {
          "category": "external",
          "summary": "https://www.oracle.com/security-alerts/cpujul2022.html",
          "url": "https://www.oracle.com/security-alerts/cpujul2022.html"
        }
      ],
      "release_date": "2021-12-13T18:15:00Z",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2024-10-22T16:31:01Z",
          "details": "Details on how to apply the fix are available at: https://cve.tuxcare.com/els/releases/CLSA-2024:1729629058",
          "product_ids": [
            "CentOS-7:python-lxml-0:3.2.1-4.el7.tuxcare.els1.x86_64",
            "CentOS-7:python-lxml-docs-0:3.2.1-4.el7.tuxcare.els1.noarch"
          ],
          "url": "https://cve.tuxcare.com/els/releases/CLSA-2024:1729629058"
        }
      ],
      "scores": [
        {
          "cvss_v2": {
            "accessComplexity": "MEDIUM",
            "accessVector": "NETWORK",
            "authentication": "NONE",
            "availabilityImpact": "PARTIAL",
            "baseScore": 6.8,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "PARTIAL",
            "integrityImpact": "PARTIAL",
            "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P",
            "version": "2.0"
          },
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "LOW",
            "baseScore": 7.2,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L",
            "version": "3.1"
          },
          "products": [
            "CentOS-7:python-lxml-0:3.2.1-4.el7.tuxcare.els1.x86_64",
            "CentOS-7:python-lxml-docs-0:3.2.1-4.el7.tuxcare.els1.noarch"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ]
    }
  ]
}