{
	"document":{
		"aggregate_severity":{
			"namespace":"https://nvd.nist.gov/vuln-metrics/cvss",
			"text":"Medium"
		},
		"category":"csaf_vex",
		"csaf_version":"2.0",
		"distribution":{
			"tlp":{
				"label":"WHITE",
				"url":"https:/www.first.org/tlp/"
			}
		},
		"lang":"en",
		"notes":[
			{
				"text":"coredns security update",
				"category":"general",
				"title":"Synopsis"
			},
			{
				"text":"An update for coredns is now available for openEuler-20.03-LTS-SP4",
				"category":"general",
				"title":"Summary"
			},
			{
				"text":"CoreDNS is a fast and flexible DNS server. The key word here is flexible: with CoreDNS you are able to do what you want with your DNS data by utilizing plugins.\n\nSecurity Fix(es):\n\nCoreDNS is a DNS server that chains plugins. Prior to version 1.14.2, a logical vulnerability in CoreDNS allows DNS access controls to be bypassed due to the default execution order of plugins. Security plugins such as acl are evaluated before the rewrite plugin, resulting in a Time-of-Check Time-of-Use (TOCTOU) flaw. This issue has been patched in version 1.14.2.(CVE-2026-26017)",
				"category":"general",
				"title":"Description"
			},
			{
				"text":"An update for coredns is now available for openEuler-20.03-LTS-SP4.\n\nopenEuler Security has rated this update as having a security impact of medium. 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":"Medium",
				"category":"general",
				"title":"Severity"
			},
			{
				"text":"coredns",
				"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-2026-2939",
				"category":"self",
				"url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-2939"
			},
			{
				"summary":"CVE-2026-26017",
				"category":"self",
				"url":"https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2026-26017&packageName=coredns"
			},
			{
				"summary":"nvd cve",
				"category":"external",
				"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-26017"
			},
			{
				"summary":"openEuler-SA-2026-2939 vex file",
				"category":"self",
				"url":"https://repo.openeuler.org/security/data/csaf/advisories/2026/csaf-openeuler-sa-2026-2939.json"
			}
		],
		"title":"An update for coredns is now available for openEuler-20.03-LTS-SP4",
		"tracking":{
			"initial_release_date":"2026-07-13T11:35:24+08:00",
			"revision_history":[
				{
					"date":"2026-07-13T11:35:24+08:00",
					"summary":"Initial",
					"number":"1.0.0"
				}
			],
			"generator":{
				"date":"2026-07-13T11:35:24+08:00",
				"engine":{
					"name":"openEuler CSAF Tool V1.0"
				}
			},
			"current_release_date":"2026-07-13T11:35:24+08:00",
			"id":"openEuler-SA-2026-2939",
			"version":"1.0.0",
			"status":"final"
		}
	},
	"product_tree":{
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			{
				"name":"openEuler",
				"category":"vendor",
				"branches":[
					{
						"name":"openEuler",
						"branches":[
							{
								"product":{
									"product_identification_helper":{
										"cpe":"cpe:/a:openEuler:openEuler:20.03-LTS-SP4"
									},
									"product_id":"openEuler-20.03-LTS-SP4",
									"name":"openEuler-20.03-LTS-SP4"
								},
								"name":"openEuler-20.03-LTS-SP4",
								"category":"product_version"
							}
						],
						"category":"product_name"
					},
					{
						"name":"aarch64",
						"branches":[
							{
								"product":{
									"product_identification_helper":{
										"cpe":"cpe:/a:openEuler:openEuler:20.03-LTS-SP4"
									},
									"product_id":"coredns-1.7.0-1.4.oe2003sp4.aarch64.rpm",
									"name":"coredns-1.7.0-1.4.oe2003sp4.aarch64.rpm"
								},
								"name":"coredns-1.7.0-1.4.oe2003sp4.aarch64.rpm",
								"category":"product_version"
							},
							{
								"product":{
									"product_identification_helper":{
										"cpe":"cpe:/a:openEuler:openEuler:20.03-LTS-SP4"
									},
									"product_id":"coredns-help-1.7.0-1.4.oe2003sp4.aarch64.rpm",
									"name":"coredns-help-1.7.0-1.4.oe2003sp4.aarch64.rpm"
								},
								"name":"coredns-help-1.7.0-1.4.oe2003sp4.aarch64.rpm",
								"category":"product_version"
							}
						],
						"category":"architecture"
					},
					{
						"name":"src",
						"branches":[
							{
								"product":{
									"product_identification_helper":{
										"cpe":"cpe:/a:openEuler:openEuler:20.03-LTS-SP4"
									},
									"product_id":"coredns-1.7.0-1.4.oe2003sp4.src.rpm",
									"name":"coredns-1.7.0-1.4.oe2003sp4.src.rpm"
								},
								"name":"coredns-1.7.0-1.4.oe2003sp4.src.rpm",
								"category":"product_version"
							}
						],
						"category":"architecture"
					},
					{
						"name":"x86_64",
						"branches":[
							{
								"product":{
									"product_identification_helper":{
										"cpe":"cpe:/a:openEuler:openEuler:20.03-LTS-SP4"
									},
									"product_id":"coredns-1.7.0-1.4.oe2003sp4.x86_64.rpm",
									"name":"coredns-1.7.0-1.4.oe2003sp4.x86_64.rpm"
								},
								"name":"coredns-1.7.0-1.4.oe2003sp4.x86_64.rpm",
								"category":"product_version"
							},
							{
								"product":{
									"product_identification_helper":{
										"cpe":"cpe:/a:openEuler:openEuler:20.03-LTS-SP4"
									},
									"product_id":"coredns-help-1.7.0-1.4.oe2003sp4.x86_64.rpm",
									"name":"coredns-help-1.7.0-1.4.oe2003sp4.x86_64.rpm"
								},
								"name":"coredns-help-1.7.0-1.4.oe2003sp4.x86_64.rpm",
								"category":"product_version"
							}
						],
						"category":"architecture"
					}
				]
			}
		],
		"relationships":[
			{
				"relates_to_product_reference":"openEuler-20.03-LTS-SP4",
				"product_reference":"coredns-1.7.0-1.4.oe2003sp4.aarch64.rpm",
				"full_product_name":{
					"product_id":"openEuler-20.03-LTS-SP4:coredns-1.7.0-1.4.oe2003sp4.aarch64",
					"name":"coredns-1.7.0-1.4.oe2003sp4.aarch64 as a component of openEuler-20.03-LTS-SP4"
				},
				"category":"default_component_of"
			},
			{
				"relates_to_product_reference":"openEuler-20.03-LTS-SP4",
				"product_reference":"coredns-help-1.7.0-1.4.oe2003sp4.aarch64.rpm",
				"full_product_name":{
					"product_id":"openEuler-20.03-LTS-SP4:coredns-help-1.7.0-1.4.oe2003sp4.aarch64",
					"name":"coredns-help-1.7.0-1.4.oe2003sp4.aarch64 as a component of openEuler-20.03-LTS-SP4"
				},
				"category":"default_component_of"
			},
			{
				"relates_to_product_reference":"openEuler-20.03-LTS-SP4",
				"product_reference":"coredns-1.7.0-1.4.oe2003sp4.src.rpm",
				"full_product_name":{
					"product_id":"openEuler-20.03-LTS-SP4:coredns-1.7.0-1.4.oe2003sp4.src",
					"name":"coredns-1.7.0-1.4.oe2003sp4.src as a component of openEuler-20.03-LTS-SP4"
				},
				"category":"default_component_of"
			},
			{
				"relates_to_product_reference":"openEuler-20.03-LTS-SP4",
				"product_reference":"coredns-1.7.0-1.4.oe2003sp4.x86_64.rpm",
				"full_product_name":{
					"product_id":"openEuler-20.03-LTS-SP4:coredns-1.7.0-1.4.oe2003sp4.x86_64",
					"name":"coredns-1.7.0-1.4.oe2003sp4.x86_64 as a component of openEuler-20.03-LTS-SP4"
				},
				"category":"default_component_of"
			},
			{
				"relates_to_product_reference":"openEuler-20.03-LTS-SP4",
				"product_reference":"coredns-help-1.7.0-1.4.oe2003sp4.x86_64.rpm",
				"full_product_name":{
					"product_id":"openEuler-20.03-LTS-SP4:coredns-help-1.7.0-1.4.oe2003sp4.x86_64",
					"name":"coredns-help-1.7.0-1.4.oe2003sp4.x86_64 as a component of openEuler-20.03-LTS-SP4"
				},
				"category":"default_component_of"
			}
		]
	},
	"vulnerabilities":[
		{
			"cve":"CVE-2026-26017",
			"notes":[
				{
					"text":"CoreDNS is a DNS server that chains plugins. Prior to version 1.14.2, a logical vulnerability in CoreDNS allows DNS access controls to be bypassed due to the default execution order of plugins. Security plugins such as acl are evaluated before the rewrite plugin, resulting in a Time-of-Check Time-of-Use (TOCTOU) flaw. This issue has been patched in version 1.14.2.",
					"category":"description",
					"title":"Vulnerability Description"
				}
			],
			"product_status":{
				"fixed":[
					"openEuler-20.03-LTS-SP4:coredns-1.7.0-1.4.oe2003sp4.aarch64",
					"openEuler-20.03-LTS-SP4:coredns-help-1.7.0-1.4.oe2003sp4.aarch64",
					"openEuler-20.03-LTS-SP4:coredns-1.7.0-1.4.oe2003sp4.src",
					"openEuler-20.03-LTS-SP4:coredns-1.7.0-1.4.oe2003sp4.x86_64",
					"openEuler-20.03-LTS-SP4:coredns-help-1.7.0-1.4.oe2003sp4.x86_64"
				]
			},
			"remediations":[
				{
					"product_ids":[
						"openEuler-20.03-LTS-SP4:coredns-1.7.0-1.4.oe2003sp4.aarch64",
						"openEuler-20.03-LTS-SP4:coredns-help-1.7.0-1.4.oe2003sp4.aarch64",
						"openEuler-20.03-LTS-SP4:coredns-1.7.0-1.4.oe2003sp4.src",
						"openEuler-20.03-LTS-SP4:coredns-1.7.0-1.4.oe2003sp4.x86_64",
						"openEuler-20.03-LTS-SP4:coredns-help-1.7.0-1.4.oe2003sp4.x86_64"
					],
					"details":"coredns security update",
					"category":"vendor_fix",
					"url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-2939"
				}
			],
			"scores":[
				{
					"cvss_v3":{
						"baseSeverity":"MEDIUM",
						"baseScore":6.3,
						"vectorString":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N",
						"version":"3.1"
					},
					"products":[
						"openEuler-20.03-LTS-SP4:coredns-1.7.0-1.4.oe2003sp4.aarch64",
						"openEuler-20.03-LTS-SP4:coredns-help-1.7.0-1.4.oe2003sp4.aarch64",
						"openEuler-20.03-LTS-SP4:coredns-1.7.0-1.4.oe2003sp4.src",
						"openEuler-20.03-LTS-SP4:coredns-1.7.0-1.4.oe2003sp4.x86_64",
						"openEuler-20.03-LTS-SP4:coredns-help-1.7.0-1.4.oe2003sp4.x86_64"
					]
				}
			],
			"threats":[
				{
					"details":"Medium",
					"category":"impact"
				}
			],
			"title":"CVE-2026-26017"
		}
	]
}