{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-45591", "assignerOrgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8", "state": "PUBLISHED", "assignerShortName": "microsoft", "dateReserved": "2026-05-12T19:55:45.730Z", "datePublished": "2026-06-09T17:05:29.575Z", "dateUpdated": "2026-06-09T17:49:08.069Z"}, "containers": {"cna": {"title": "ASP.NET Core Denial of Service Vulnerability", "datePublic": "2026-06-09T14:00:00.000Z", "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:visual_studio_2026:*:*:*:*:*:*:*:*", "versionStartIncluding": "18.6.0", "versionEndExcluding": "18.6.3"}, {"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*", "versionStartIncluding": "10.0.0", "versionEndExcluding": "10.0.9"}, {"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:asp.net_core:*:*:*:*:*:*:*:*", "versionStartIncluding": "10.0", "versionEndExcluding": "10.0.9"}, {"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:asp.net_core:*:*:*:*:*:*:*:*", "versionStartIncluding": "8.0", "versionEndExcluding": "8.0.28"}, {"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*", "versionStartIncluding": "8.0.0", "versionEndExcluding": "8.0.28"}, {"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*", "versionStartIncluding": "9.0.0", "versionEndExcluding": "9.0.17"}, {"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:asp.net_core:*:*:*:*:*:*:*:*", "versionStartIncluding": "9.0", "versionEndExcluding": "9.0.17"}]}]}], "affected": [{"vendor": "Microsoft", "product": ".NET 10.0", "versions": [{"version": "10.0.0", "lessThan": "10.0.9", "versionType": "custom", "status": "affected"}]}, {"vendor": "Microsoft", "product": ".NET 8.0", "versions": [{"version": "8.0.0", "lessThan": "8.0.28", "versionType": "custom", "status": "affected"}]}, {"vendor": "Microsoft", "product": ".NET 9.0", "versions": [{"version": "9.0.0", "lessThan": "9.0.17", "versionType": "custom", "status": "affected"}]}, {"vendor": "Microsoft", "product": "ASP.NET Core 10.0", "versions": [{"version": "10.0", "lessThan": "10.0.9", "versionType": "custom", "status": "affected"}]}, {"vendor": "Microsoft", "product": "ASP.NET Core 8.0", "versions": [{"version": "8.0", "lessThan": "8.0.28", "versionType": "custom", "status": "affected"}]}, {"vendor": "Microsoft", "product": "ASP.NET Core 9.0", "versions": [{"version": "9.0", "lessThan": "9.0.17", "versionType": "custom", "status": "affected"}]}, {"vendor": "Microsoft", "product": "Microsoft Visual Studio 2026 version 18.6", "versions": [{"version": "18.6.0", "lessThan": "18.6.3", "versionType": "custom", "status": "affected"}]}], "descriptions": [{"value": "Uncontrolled resource consumption in ASP.NET Core allows an unauthorized attacker to deny service over a network.", "lang": "en-US"}], "problemTypes": [{"descriptions": [{"description": "CWE-400: Uncontrolled Resource Consumption", "lang": "en-US", "type": "CWE", "cweId": "CWE-400"}]}], "providerMetadata": {"orgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8", "shortName": "microsoft", "dateUpdated": "2026-06-09T17:49:08.069Z"}, "references": [{"name": "ASP.NET Core Denial of Service Vulnerability", "tags": ["vendor-advisory", "patch"], "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45591"}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en-US", "value": "GENERAL"}], "cvssV3_1": {"version": "3.1", "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/E:U/RL:O/RC:C"}}]}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "Uncontrolled resource consumption in ASP.NET Core allows an unauthorized attacker to deny service over a network."}], "id": "CVE-2026-45591", "lastModified": "2026-06-09T19:32:51.440", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "secure@microsoft.com", "type": "Primary"}]}, "published": "2026-06-09T17:17:26.933", "references": [{"source": "secure@microsoft.com", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45591"}], "sourceIdentifier": "secure@microsoft.com", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-400"}], "source": "secure@microsoft.com", "type": "Primary"}]}

{}

{"created": "2026-06-09T20:30:13.936577+00:00", "updated": "2026-06-09T20:30:13.936592+00:00", "vendors": []}