{
  "document": {
    "aggregate_severity": {
      "namespace": "https://www.suse.com/support/security/rating/",
      "text": "moderate"
    },
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "distribution": {
      "text": "Copyright 2024 SUSE LLC. All rights reserved.",
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "en",
    "notes": [
      {
        "category": "summary",
        "text": "Recommended update for python-urllib3",
        "title": "Title of the patch"
      },
      {
        "category": "description",
        "text": "This update for python-urllib3 fixes the following issue:\n\n- Fix regression in CVE-2025-66471.patch (bsc#1254867)\n",
        "title": "Description of the patch"
      },
      {
        "category": "details",
        "text": "SUSE-SL-Micro-6.2-657",
        "title": "Patchnames"
      },
      {
        "category": "legal_disclaimer",
        "text": "CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).",
        "title": "Terms of use"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "https://www.suse.com/support/security/contact/",
      "name": "SUSE Product Security Team",
      "namespace": "https://www.suse.com/"
    },
    "references": [
      {
        "category": "external",
        "summary": "SUSE ratings",
        "url": "https://www.suse.com/support/security/rating/"
      },
      {
        "category": "self",
        "summary": "URL of this CSAF notice",
        "url": "https://ftp.suse.com/pub/projects/security/csaf/suse-ru-2026_21397-1.json"
      },
      {
        "category": "self",
        "summary": "URL for SUSE-RU-2026:21397-1",
        "url": "https://www.suse.com/support/update/announcement//suse-ru-202621397-1/"
      },
      {
        "category": "self",
        "summary": "E-Mail link for SUSE-RU-2026:21397-1",
        "url": "https://lists.suse.com/pipermail/sle-updates/2026-April/046110.html"
      },
      {
        "category": "self",
        "summary": "SUSE Bug 1254867",
        "url": "https://bugzilla.suse.com/1254867"
      },
      {
        "category": "self",
        "summary": "SUSE CVE CVE-2025-66471 page",
        "url": "https://www.suse.com/security/cve/CVE-2025-66471/"
      }
    ],
    "title": "Recommended update for python-urllib3",
    "tracking": {
      "current_release_date": "2026-04-29T14:13:35Z",
      "generator": {
        "date": "2026-04-29T14:13:35Z",
        "engine": {
          "name": "cve-database.git:bin/generate-csaf.pl",
          "version": "1"
        }
      },
      "id": "SUSE-RU-2026:21397-1",
      "initial_release_date": "2026-04-29T14:13:35Z",
      "revision_history": [
        {
          "date": "2026-04-29T14:13:35Z",
          "number": "1",
          "summary": "Current version"
        }
      ],
      "status": "final",
      "version": "1"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version",
                "name": "python313-urllib3-2.5.0-160000.5.1.noarch",
                "product": {
                  "name": "python313-urllib3-2.5.0-160000.5.1.noarch",
                  "product_id": "python313-urllib3-2.5.0-160000.5.1.noarch"
                }
              }
            ],
            "category": "architecture",
            "name": "noarch"
          },
          {
            "branches": [
              {
                "category": "product_name",
                "name": "SUSE Linux Micro 6.2",
                "product": {
                  "name": "SUSE Linux Micro 6.2",
                  "product_id": "SUSE Linux Micro 6.2",
                  "product_identification_helper": {
                    "cpe": "cpe:/o:suse:sl-micro:6.2"
                  }
                }
              }
            ],
            "category": "product_family",
            "name": "SUSE Linux Enterprise"
          }
        ],
        "category": "vendor",
        "name": "SUSE"
      }
    ],
    "relationships": [
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "python313-urllib3-2.5.0-160000.5.1.noarch as component of SUSE Linux Micro 6.2",
          "product_id": "SUSE Linux Micro 6.2:python313-urllib3-2.5.0-160000.5.1.noarch"
        },
        "product_reference": "python313-urllib3-2.5.0-160000.5.1.noarch",
        "relates_to_product_reference": "SUSE Linux Micro 6.2"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2025-66471",
      "ids": [
        {
          "system_name": "SUSE CVE Page",
          "text": "https://www.suse.com/security/cve/CVE-2025-66471"
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "urllib3 is a user-friendly HTTP client library for Python. Starting in version 1.0 and prior to 2.6.0, the Streaming API improperly handles highly compressed data. urllib3\u0027s streaming API is designed for the efficient handling of large HTTP responses by reading the content in chunks, rather than loading the entire response body into memory at once. When streaming a compressed response, urllib3 can perform decoding or decompression based on the HTTP Content-Encoding header (e.g., gzip, deflate, br, or zstd). The library must read compressed data from the network and decompress it until the requested chunk size is met. Any resulting decompressed data that exceeds the requested amount is held in an internal buffer for the next read operation. The decompression logic could cause urllib3 to fully decode a small amount of highly compressed data in a single operation. This can result in excessive resource consumption (high CPU usage and massive memory allocation for the decompressed data.",
          "title": "CVE description"
        }
      ],
      "product_status": {
        "recommended": [
          "SUSE Linux Micro 6.2:python313-urllib3-2.5.0-160000.5.1.noarch"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "CVE-2025-66471",
          "url": "https://www.suse.com/security/cve/CVE-2025-66471"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1254867 for CVE-2025-66471",
          "url": "https://bugzilla.suse.com/1254867"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1262592 for CVE-2025-66471",
          "url": "https://bugzilla.suse.com/1262592"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
          "product_ids": [
            "SUSE Linux Micro 6.2:python313-urllib3-2.5.0-160000.5.1.noarch"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
            "version": "3.1"
          },
          "products": [
            "SUSE Linux Micro 6.2:python313-urllib3-2.5.0-160000.5.1.noarch"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "date": "2026-04-29T14:13:35Z",
          "details": "moderate"
        }
      ],
      "title": "CVE-2025-66471"
    }
  ]
}