{"items":[{"id":"NVI-00016196","kind":"vulnerability","title":"Microsoft Security Advisory CVE-2026-47300 – .NET Elevation of Privilege Vulnerability","revision":2,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected.","NVD lastModified does not establish freshness of every associated CPE record."],"lifecycle":"active","identifiers":["GHSA-8prm-248r-h957","CVE-2026-47300"],"plain_summary":"GitHub lists this reviewed advisory for Microsoft.AspNetCore.Authentication.Negotiate, Microsoft.AspNetCore.Authentication.Negotiate, Microsoft.AspNetCore.Authentication.Negotiate. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-4070e75c62176ec08104b07780094c04"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[{"kind":"CVSS","as_of":"2026-07-21T16:13:40.000Z","value":"8.8 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-43a3c7cc8d7a9d06de99a0b4162f52cc"},{"kind":"CVSS","as_of":"2026-10-28T20:17:27.937Z","value":"8.8 HIGH (3.1)","meaning":"secure@microsoft.com severity; no combined Null risk score.","source_id":"sr-4070e75c62176ec08104b07780094c04"}],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-43a3c7cc8d7a9d06de99a0b4162f52cc","url":"https://github.com/advisories/GHSA-8prm-248r-h957","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-8prm-248r-h957","publisher":"GitHub Advisory Database","observed_at":"2026-11-03T22:34:49.300Z"},{"id":"sr-4070e75c62176ec08104b07780094c04","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-47300","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2026-47300","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-08T01:47:43.921Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-43a3c7cc8d7a9d06de99a0b4162f52cc"],"technology":"Microsoft.AspNetCore.Authentication.Negotiate","known_exclusions":[],"conditions_summary":"## Executive summary\n\nMicrosoft is releasing this security advisory to provide information about a vulnerability in ASP.NET Core Negotiate Authentication (Microsoft.AspNetCore.Authentication.Negotiate). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability.\n\nAn elevation of privilege vulnerability exists in the ASP.NET Core Negotiate authentication handler in .NET 8, .NET 9, and .NET 10 due to improper validation.\n\n## Announcement\n\nAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/**TBD**\n\n## CVSS Details\n\n- **Version:** 3.1\n- **Severity:** High\n- **Score:** 8.8\n- **Vector:** `CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`\n- **Weakness:** CWE-303 (Incorrect Implementation of Authentication Algorithm)\n\n## Affected Platforms\n\n- **Platforms:** All\n- **Architectures:** All\n\n### Mitigation Factors\n\nYour ASP.NET Core app is only affected if it uses Negotiate authentication and LDAP to retrieve role information.\n\n## Affected Packages\nThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below\n\n### <a na","public_affected_ranges":[">= 10.0.0, <= 10.0.9"]},{"certainty":"source_listed","source_ids":["sr-43a3c7cc8d7a9d06de99a0b4162f52cc"],"technology":"Microsoft.AspNetCore.Authentication.Negotiate","known_exclusions":[],"conditions_summary":"## Executive summary\n\nMicrosoft is releasing this security advisory to provide information about a vulnerability in ASP.NET Core Negotiate Authentication (Microsoft.AspNetCore.Authentication.Negotiate). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability.\n\nAn elevation of privilege vulnerability exists in the ASP.NET Core Negotiate authentication handler in .NET 8, .NET 9, and .NET 10 due to improper validation.\n\n## Announcement\n\nAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/**TBD**\n\n## CVSS Details\n\n- **Version:** 3.1\n- **Severity:** High\n- **Score:** 8.8\n- **Vector:** `CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`\n- **Weakness:** CWE-303 (Incorrect Implementation of Authentication Algorithm)\n\n## Affected Platforms\n\n- **Platforms:** All\n- **Architectures:** All\n\n### Mitigation Factors\n\nYour ASP.NET Core app is only affected if it uses Negotiate authentication and LDAP to retrieve role information.\n\n## Affected Packages\nThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below\n\n### <a na","public_affected_ranges":[">= 9.0.0, <= 9.0.17"]},{"certainty":"source_listed","source_ids":["sr-43a3c7cc8d7a9d06de99a0b4162f52cc"],"technology":"Microsoft.AspNetCore.Authentication.Negotiate","known_exclusions":[],"conditions_summary":"## Executive summary\n\nMicrosoft is releasing this security advisory to provide information about a vulnerability in ASP.NET Core Negotiate Authentication (Microsoft.AspNetCore.Authentication.Negotiate). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability.\n\nAn elevation of privilege vulnerability exists in the ASP.NET Core Negotiate authentication handler in .NET 8, .NET 9, and .NET 10 due to improper validation.\n\n## Announcement\n\nAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/**TBD**\n\n## CVSS Details\n\n- **Version:** 3.1\n- **Severity:** High\n- **Score:** 8.8\n- **Vector:** `CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`\n- **Weakness:** CWE-303 (Incorrect Implementation of Authentication Algorithm)\n\n## Affected Platforms\n\n- **Platforms:** All\n- **Architectures:** All\n\n### Mitigation Factors\n\nYour ASP.NET Core app is only affected if it uses Negotiate authentication and LDAP to retrieve role information.\n\n## Affected Packages\nThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below\n\n### <a na","public_affected_ranges":[">= 8.0.0, <= 8.0.28"]}],"null_published_at":"2026-11-08T19:53:44.051Z","source_updated_at":"2026-07-21T16:13:40.000Z","source_disclosed_at":"2026-07-21T16:13:38.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Source facts changed; compare the preserved prior revision.","null_first_observed_at":"2026-11-03T22:34:49.300Z"},{"id":"NVI-00016196","kind":"vulnerability","title":"Microsoft Security Advisory CVE-2026-47300 – .NET Elevation of Privilege Vulnerability","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-8prm-248r-h957","CVE-2026-47300"],"plain_summary":"GitHub lists this reviewed advisory for Microsoft.AspNetCore.Authentication.Negotiate, Microsoft.AspNetCore.Authentication.Negotiate, Microsoft.AspNetCore.Authentication.Negotiate. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-43a3c7cc8d7a9d06de99a0b4162f52cc"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[{"kind":"CVSS","as_of":"2026-07-21T16:13:40.000Z","value":"8.8 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-43a3c7cc8d7a9d06de99a0b4162f52cc"}],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-43a3c7cc8d7a9d06de99a0b4162f52cc","url":"https://github.com/advisories/GHSA-8prm-248r-h957","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-8prm-248r-h957","publisher":"GitHub Advisory Database","observed_at":"2026-11-03T22:34:49.300Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-43a3c7cc8d7a9d06de99a0b4162f52cc"],"technology":"Microsoft.AspNetCore.Authentication.Negotiate","known_exclusions":[],"conditions_summary":"## Executive summary\n\nMicrosoft is releasing this security advisory to provide information about a vulnerability in ASP.NET Core Negotiate Authentication (Microsoft.AspNetCore.Authentication.Negotiate). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability.\n\nAn elevation of privilege vulnerability exists in the ASP.NET Core Negotiate authentication handler in .NET 8, .NET 9, and .NET 10 due to improper validation.\n\n## Announcement\n\nAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/**TBD**\n\n## CVSS Details\n\n- **Version:** 3.1\n- **Severity:** High\n- **Score:** 8.8\n- **Vector:** `CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`\n- **Weakness:** CWE-303 (Incorrect Implementation of Authentication Algorithm)\n\n## Affected Platforms\n\n- **Platforms:** All\n- **Architectures:** All\n\n### Mitigation Factors\n\nYour ASP.NET Core app is only affected if it uses Negotiate authentication and LDAP to retrieve role information.\n\n## Affected Packages\nThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below\n\n### <a na","public_affected_ranges":[">= 10.0.0, <= 10.0.9"]},{"certainty":"source_listed","source_ids":["sr-43a3c7cc8d7a9d06de99a0b4162f52cc"],"technology":"Microsoft.AspNetCore.Authentication.Negotiate","known_exclusions":[],"conditions_summary":"## Executive summary\n\nMicrosoft is releasing this security advisory to provide information about a vulnerability in ASP.NET Core Negotiate Authentication (Microsoft.AspNetCore.Authentication.Negotiate). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability.\n\nAn elevation of privilege vulnerability exists in the ASP.NET Core Negotiate authentication handler in .NET 8, .NET 9, and .NET 10 due to improper validation.\n\n## Announcement\n\nAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/**TBD**\n\n## CVSS Details\n\n- **Version:** 3.1\n- **Severity:** High\n- **Score:** 8.8\n- **Vector:** `CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`\n- **Weakness:** CWE-303 (Incorrect Implementation of Authentication Algorithm)\n\n## Affected Platforms\n\n- **Platforms:** All\n- **Architectures:** All\n\n### Mitigation Factors\n\nYour ASP.NET Core app is only affected if it uses Negotiate authentication and LDAP to retrieve role information.\n\n## Affected Packages\nThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below\n\n### <a na","public_affected_ranges":[">= 9.0.0, <= 9.0.17"]},{"certainty":"source_listed","source_ids":["sr-43a3c7cc8d7a9d06de99a0b4162f52cc"],"technology":"Microsoft.AspNetCore.Authentication.Negotiate","known_exclusions":[],"conditions_summary":"## Executive summary\n\nMicrosoft is releasing this security advisory to provide information about a vulnerability in ASP.NET Core Negotiate Authentication (Microsoft.AspNetCore.Authentication.Negotiate). This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability.\n\nAn elevation of privilege vulnerability exists in the ASP.NET Core Negotiate authentication handler in .NET 8, .NET 9, and .NET 10 due to improper validation.\n\n## Announcement\n\nAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/**TBD**\n\n## CVSS Details\n\n- **Version:** 3.1\n- **Severity:** High\n- **Score:** 8.8\n- **Vector:** `CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`\n- **Weakness:** CWE-303 (Incorrect Implementation of Authentication Algorithm)\n\n## Affected Platforms\n\n- **Platforms:** All\n- **Architectures:** All\n\n### Mitigation Factors\n\nYour ASP.NET Core app is only affected if it uses Negotiate authentication and LDAP to retrieve role information.\n\n## Affected Packages\nThe vulnerability affects any Microsoft .NET project if it uses any of affected package versions listed below\n\n### <a na","public_affected_ranges":[">= 8.0.0, <= 8.0.28"]}],"null_published_at":"2026-11-04T10:04:27.904Z","source_updated_at":"2026-07-21T16:13:40.000Z","source_disclosed_at":"2026-07-21T16:13:38.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"First indexed by Null; source disclosure date is shown separately.","null_first_observed_at":"2026-11-03T22:34:49.300Z"}],"next_cursor":null,"snapshot_revision":"42594"}