{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-109478", "assignerOrgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8", "state": "PUBLISHED", "assignerShortName": "microsoft", "dateReserved": "2026-10-12T17:01:11.371Z", "datePublished": "2026-11-10T18:15:23.710Z", "dateUpdated": "2026-11-10T18:15:23.710Z"}, "containers": {"cna": {"title": "ASP.NET Core Denial of Service Vulnerability", "datePublic": "2026-11-10T16:00:00.000Z", "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:.net_8.0_installed_on_windows:*:*:*:*:*:*:*:*", "versionStartIncluding": "8.0.0", "versionEndExcluding": "8.0.34"}, {"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:.net_8.0_installed_on_linux:*:*:*:*:*:*:*:*", "versionStartIncluding": "8.0.0", "versionEndExcluding": "8.0.34"}, {"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:.net_8.0_installed_on_mac_os:*:*:*:*:*:*:*:*", "versionStartIncluding": "8.0.0", "versionEndExcluding": "8.0.34"}, {"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:visual_studio_2022:*:*:*:*:*:*:*:*", "versionStartIncluding": "17.14.0", "versionEndExcluding": "17.14.45"}, {"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:microsoft_visual_studio_2026_version_18.11:*:*:*:*:*:*:*:*", "versionStartIncluding": "18.11.0", "versionEndExcluding": "18.11.4"}, {"vulnerable": true, "criteria": "cpe:2.3:a:microsoft:microsoft_visual_studio_2026_version_18.12:*:*:*:*:*:*:*:*", "versionStartIncluding": "18.12.0", "versionEndExcluding": "18.12.0"}]}]}], "affected": [{"vendor": "Microsoft", "product": ".NET 8.0 installed on Linux", "versions": [{"version": "8.0.0", "lessThan": "8.0.34", "versionType": "custom", "status": "affected"}]}, {"vendor": "Microsoft", "product": ".NET 8.0 installed on Mac OS", "versions": [{"version": "8.0.0", "lessThan": "8.0.34", "versionType": "custom", "status": "affected"}]}, {"vendor": "Microsoft", "product": ".NET 8.0 installed on Windows", "versions": [{"version": "8.0.0", "lessThan": "8.0.34", "versionType": "custom", "status": "affected"}]}, {"vendor": "Microsoft", "product": "Microsoft Visual Studio 2022 version 17.14", "versions": [{"version": "17.14.0", "lessThan": "17.14.45", "versionType": "custom", "status": "affected"}]}, {"vendor": "Microsoft", "product": "Microsoft Visual Studio 2026 version 18.11", "versions": [{"version": "18.11.0", "lessThan": "18.11.4", "versionType": "custom", "status": "affected"}]}, {"vendor": "Microsoft", "product": "Microsoft Visual Studio 2026 version 18.12", "versions": [{"version": "18.12.0", "lessThan": "18.12.0", "versionType": "custom", "status": "affected"}]}], "descriptions": [{"value": "Inefficient algorithmic complexity in ASP.NET Core allows an unauthorized attacker to deny service over a network.", "lang": "en-US"}], "problemTypes": [{"descriptions": [{"description": "CWE-407: Inefficient Algorithmic Complexity", "lang": "en-US", "type": "CWE", "cweId": "CWE-407"}]}], "providerMetadata": {"orgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8", "shortName": "microsoft", "dateUpdated": "2026-11-10T18:15:23.710Z"}, "references": [{"name": "ASP.NET Core Denial of Service Vulnerability", "tags": ["vendor-advisory", "patch"], "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-109478"}], "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"}}]}}}

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