{
	"document":{
		"aggregate_severity":{
			"namespace":"https://nvd.nist.gov/vuln-metrics/cvss",
			"text":"High"
		},
		"category":"csaf_vex",
		"csaf_version":"2.0",
		"distribution":{
			"tlp":{
				"label":"WHITE",
				"url":"https:/www.first.org/tlp/"
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		"lang":"en",
		"notes":[
			{
				"text":"python-urllib3 security update",
				"category":"general",
				"title":"Synopsis"
			},
			{
				"text":"An update for python-urllib3 is now available for openEuler-24.03-LTS-SP1",
				"category":"general",
				"title":"Summary"
			},
			{
				"text":"HTTP library with thread-safe connection pooling, file post support, sanity friendly, and more.\n\nSecurity Fix(es):\n\nurllib3 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's 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.(CVE-2025-66471)",
				"category":"general",
				"title":"Description"
			},
			{
				"text":"An update for python-urllib3 is now available for openEuler-24.03-LTS-SP1.\n\nopenEuler Security has rated this update as having a security impact of high. A Common Vunlnerability Scoring System(CVSS)base score,which gives a detailed severity rating, is available for each vulnerability from the CVElink(s) in the References section.",
				"category":"general",
				"title":"Topic"
			},
			{
				"text":"High",
				"category":"general",
				"title":"Severity"
			},
			{
				"text":"python-urllib3",
				"category":"general",
				"title":"Affected Component"
			}
		],
		"publisher":{
			"issuing_authority":"openEuler security committee",
			"name":"openEuler",
			"namespace":"https://www.openeuler.org",
			"contact_details":"openeuler-security@openeuler.org",
			"category":"vendor"
		},
		"references":[
			{
				"summary":"openEuler-SA-2026-1249",
				"category":"self",
				"url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-1249"
			},
			{
				"summary":"CVE-2025-66471",
				"category":"self",
				"url":"https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2025-66471&packageName=python-urllib3"
			},
			{
				"summary":"nvd cve",
				"category":"external",
				"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-66471"
			},
			{
				"summary":"openEuler-SA-2026-1249 vex file",
				"category":"self",
				"url":"https://repo.openeuler.org/security/data/csaf/advisories/2026/csaf-openeuler-sa-2026-1249.json"
			}
		],
		"title":"An update for python-urllib3 is now available for openEuler-24.03-LTS-SP1",
		"tracking":{
			"initial_release_date":"2026-02-03T16:14:04+08:00",
			"revision_history":[
				{
					"date":"2026-02-03T16:14:04+08:00",
					"summary":"Initial",
					"number":"1.0.0"
				}
			],
			"generator":{
				"date":"2026-02-03T16:14:04+08:00",
				"engine":{
					"name":"openEuler CSAF Tool V1.0"
				}
			},
			"current_release_date":"2026-02-03T16:14:04+08:00",
			"id":"openEuler-SA-2026-1249",
			"version":"1.0.0",
			"status":"final"
		}
	},
	"product_tree":{
		"branches":[
			{
				"name":"openEuler",
				"category":"vendor",
				"branches":[
					{
						"name":"openEuler",
						"branches":[
							{
								"product":{
									"product_identification_helper":{
										"cpe":"cpe:/a:openEuler:openEuler:24.03-LTS-SP1"
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									"product_id":"openEuler-24.03-LTS-SP1",
									"name":"openEuler-24.03-LTS-SP1"
								},
								"name":"openEuler-24.03-LTS-SP1",
								"category":"product_version"
							}
						],
						"category":"product_name"
					},
					{
						"name":"src",
						"branches":[
							{
								"product":{
									"product_identification_helper":{
										"cpe":"cpe:/a:openEuler:openEuler:24.03-LTS-SP1"
									},
									"product_id":"python-urllib3-1.26.18-5.oe2403sp1.src.rpm",
									"name":"python-urllib3-1.26.18-5.oe2403sp1.src.rpm"
								},
								"name":"python-urllib3-1.26.18-5.oe2403sp1.src.rpm",
								"category":"product_version"
							}
						],
						"category":"architecture"
					},
					{
						"name":"noarch",
						"branches":[
							{
								"product":{
									"product_identification_helper":{
										"cpe":"cpe:/a:openEuler:openEuler:24.03-LTS-SP1"
									},
									"product_id":"python3-urllib3-1.26.18-5.oe2403sp1.noarch.rpm",
									"name":"python3-urllib3-1.26.18-5.oe2403sp1.noarch.rpm"
								},
								"name":"python3-urllib3-1.26.18-5.oe2403sp1.noarch.rpm",
								"category":"product_version"
							}
						],
						"category":"architecture"
					}
				]
			}
		],
		"relationships":[
			{
				"relates_to_product_reference":"openEuler-24.03-LTS-SP1",
				"product_reference":"python-urllib3-1.26.18-5.oe2403sp1.src.rpm",
				"full_product_name":{
					"product_id":"openEuler-24.03-LTS-SP1:python-urllib3-1.26.18-5.oe2403sp1.src",
					"name":"python-urllib3-1.26.18-5.oe2403sp1.src as a component of openEuler-24.03-LTS-SP1"
				},
				"category":"default_component_of"
			},
			{
				"relates_to_product_reference":"openEuler-24.03-LTS-SP1",
				"product_reference":"python3-urllib3-1.26.18-5.oe2403sp1.noarch.rpm",
				"full_product_name":{
					"product_id":"openEuler-24.03-LTS-SP1:python3-urllib3-1.26.18-5.oe2403sp1.noarch",
					"name":"python3-urllib3-1.26.18-5.oe2403sp1.noarch as a component of openEuler-24.03-LTS-SP1"
				},
				"category":"default_component_of"
			}
		]
	},
	"vulnerabilities":[
		{
			"cve":"CVE-2025-66471",
			"notes":[
				{
					"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's 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.",
					"category":"description",
					"title":"Vulnerability Description"
				}
			],
			"product_status":{
				"fixed":[
					"openEuler-24.03-LTS-SP1:python-urllib3-1.26.18-5.oe2403sp1.src",
					"openEuler-24.03-LTS-SP1:python3-urllib3-1.26.18-5.oe2403sp1.noarch"
				]
			},
			"remediations":[
				{
					"product_ids":[
						"openEuler-24.03-LTS-SP1:python-urllib3-1.26.18-5.oe2403sp1.src",
						"openEuler-24.03-LTS-SP1:python3-urllib3-1.26.18-5.oe2403sp1.noarch"
					],
					"details":"python-urllib3 security update",
					"category":"vendor_fix",
					"url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-1249"
				}
			],
			"scores":[
				{
					"cvss_v3":{
						"baseSeverity":"HIGH",
						"baseScore":7.5,
						"vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
						"version":"3.1"
					},
					"products":[
						"openEuler-24.03-LTS-SP1:python-urllib3-1.26.18-5.oe2403sp1.src",
						"openEuler-24.03-LTS-SP1:python3-urllib3-1.26.18-5.oe2403sp1.noarch"
					]
				}
			],
			"threats":[
				{
					"details":"High",
					"category":"impact"
				}
			],
			"title":"CVE-2025-66471"
		}
	]
}