{"items":[{"id":"NVI-00011999","kind":"vulnerability","title":"Microsoft Security Advisory CVE-2026-102870 - ASP.NET Core Remote Code Execution Vulnerability","revision":3,"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-g27p-qf6j-c96c","CVE-2026-102870"],"plain_summary":"GitHub lists this reviewed advisory for Microsoft.AspNetCore.Components.WebAssembly.Server, Microsoft.AspNetCore.Components.WebAssembly.Server. 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-27d547562c9e2ddfce11f51fb75157e3"],"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":"2026-10-19T19:19:34.000Z","value":"8.8 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-7fdd6665d0dbc8496cb5ec26b5dd4fdb"},{"kind":"CVSS","as_of":"2026-10-25T18:16:42.253Z","value":"8.8 HIGH (3.1)","meaning":"secure@microsoft.com severity; no combined Null risk score.","source_id":"sr-7f785dc53d9781a5751c6ab5b5108ef5"},{"kind":"EPSS","as_of":"2026-10-31T12:00:27.000Z","value":"0.906%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.59858. Missing scores are unknown.","source_id":"sr-27d547562c9e2ddfce11f51fb75157e3"}],"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-7fdd6665d0dbc8496cb5ec26b5dd4fdb","url":"https://github.com/advisories/GHSA-g27p-qf6j-c96c","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-g27p-qf6j-c96c","publisher":"GitHub Advisory Database","observed_at":"2026-10-31T23:14:14.588Z"},{"id":"sr-7f785dc53d9781a5751c6ab5b5108ef5","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-102870","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2026-102870","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-03T09:58:04.487Z"},{"id":"sr-27d547562c9e2ddfce11f51fb75157e3","url":"https://www.first.org/epss/data.html","basis":"official_catalog","notes":"FIRST EPSS; probability of exploitation in the next 30 days, not local compromise. Dataset date/model retained; FIRST services terms apply.","title":"CVE-2026-102870","publisher":"FIRST EPSS","observed_at":"2026-11-01T01:39:43.063Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-7fdd6665d0dbc8496cb5ec26b5dd4fdb"],"technology":"Microsoft.AspNetCore.Components.WebAssembly.Server","known_exclusions":[],"conditions_summary":"## Executive summary\n\nMicrosoft is releasing this security advisory to provide information about a vulnerability in the Blazor WebAssembly debugger included in `Microsoft.AspNetCore.Components.WebAssembly.Server`. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability.\n\nThe Blazor WebAssembly debug proxy evaluates debugger expressions by generating and compiling C# source. Certain values originating in the application being debugged, including `ToString()` results, descriptions, and class names, are embedded in that generated source without consistent escaping. An attacker-controlled value can escape the generated string literal and execute code on a developer's machine when the developer evaluates an expression during debugging.\n\n## Announcement\n\nAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/445\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:N/UI:R/S:U/C:H/I:H/A:H`\n- **Weakness:** CWE-94 (Improper Control of Generation of Code ('Code Injection'))\n\n## Affected Platforms\n\n- **Platforms:** Windows, Linux, macOS","public_affected_ranges":[">= 10.0.0, <= 10.0.12"]},{"certainty":"source_listed","source_ids":["sr-7fdd6665d0dbc8496cb5ec26b5dd4fdb"],"technology":"Microsoft.AspNetCore.Components.WebAssembly.Server","known_exclusions":[],"conditions_summary":"## Executive summary\n\nMicrosoft is releasing this security advisory to provide information about a vulnerability in the Blazor WebAssembly debugger included in `Microsoft.AspNetCore.Components.WebAssembly.Server`. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability.\n\nThe Blazor WebAssembly debug proxy evaluates debugger expressions by generating and compiling C# source. Certain values originating in the application being debugged, including `ToString()` results, descriptions, and class names, are embedded in that generated source without consistent escaping. An attacker-controlled value can escape the generated string literal and execute code on a developer's machine when the developer evaluates an expression during debugging.\n\n## Announcement\n\nAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/445\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:N/UI:R/S:U/C:H/I:H/A:H`\n- **Weakness:** CWE-94 (Improper Control of Generation of Code ('Code Injection'))\n\n## Affected Platforms\n\n- **Platforms:** Windows, Linux, macOS","public_affected_ranges":[">= 11.0.0-preview.1, <= 11.0.0-rc.1"]}],"null_published_at":"2026-11-08T15:11:49.378Z","source_updated_at":"2026-10-19T19:19:34.000Z","source_disclosed_at":"2026-10-13T20:27:36.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Source facts changed; compare the preserved prior revision.","null_first_observed_at":"2026-10-31T23:14:14.588Z"},{"id":"NVI-00011999","kind":"vulnerability","title":"Microsoft Security Advisory CVE-2026-102870 - ASP.NET Core Remote Code Execution Vulnerability","revision":2,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-g27p-qf6j-c96c","CVE-2026-102870"],"plain_summary":"GitHub lists this reviewed advisory for Microsoft.AspNetCore.Components.WebAssembly.Server, Microsoft.AspNetCore.Components.WebAssembly.Server. 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-27d547562c9e2ddfce11f51fb75157e3"],"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":"2026-10-19T19:19:34.000Z","value":"8.8 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-7fdd6665d0dbc8496cb5ec26b5dd4fdb"},{"kind":"EPSS","as_of":"2026-10-31T12:00:27.000Z","value":"0.906%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.59858. Missing scores are unknown.","source_id":"sr-27d547562c9e2ddfce11f51fb75157e3"}],"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-7fdd6665d0dbc8496cb5ec26b5dd4fdb","url":"https://github.com/advisories/GHSA-g27p-qf6j-c96c","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-g27p-qf6j-c96c","publisher":"GitHub Advisory Database","observed_at":"2026-10-31T23:14:14.588Z"},{"id":"sr-27d547562c9e2ddfce11f51fb75157e3","url":"https://www.first.org/epss/data.html","basis":"official_catalog","notes":"FIRST EPSS; probability of exploitation in the next 30 days, not local compromise. Dataset date/model retained; FIRST services terms apply.","title":"CVE-2026-102870","publisher":"FIRST EPSS","observed_at":"2026-11-01T01:39:43.063Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-7fdd6665d0dbc8496cb5ec26b5dd4fdb"],"technology":"Microsoft.AspNetCore.Components.WebAssembly.Server","known_exclusions":[],"conditions_summary":"## Executive summary\n\nMicrosoft is releasing this security advisory to provide information about a vulnerability in the Blazor WebAssembly debugger included in `Microsoft.AspNetCore.Components.WebAssembly.Server`. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability.\n\nThe Blazor WebAssembly debug proxy evaluates debugger expressions by generating and compiling C# source. Certain values originating in the application being debugged, including `ToString()` results, descriptions, and class names, are embedded in that generated source without consistent escaping. An attacker-controlled value can escape the generated string literal and execute code on a developer's machine when the developer evaluates an expression during debugging.\n\n## Announcement\n\nAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/445\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:N/UI:R/S:U/C:H/I:H/A:H`\n- **Weakness:** CWE-94 (Improper Control of Generation of Code ('Code Injection'))\n\n## Affected Platforms\n\n- **Platforms:** Windows, Linux, macOS","public_affected_ranges":[">= 10.0.0, <= 10.0.12"]},{"certainty":"source_listed","source_ids":["sr-7fdd6665d0dbc8496cb5ec26b5dd4fdb"],"technology":"Microsoft.AspNetCore.Components.WebAssembly.Server","known_exclusions":[],"conditions_summary":"## Executive summary\n\nMicrosoft is releasing this security advisory to provide information about a vulnerability in the Blazor WebAssembly debugger included in `Microsoft.AspNetCore.Components.WebAssembly.Server`. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability.\n\nThe Blazor WebAssembly debug proxy evaluates debugger expressions by generating and compiling C# source. Certain values originating in the application being debugged, including `ToString()` results, descriptions, and class names, are embedded in that generated source without consistent escaping. An attacker-controlled value can escape the generated string literal and execute code on a developer's machine when the developer evaluates an expression during debugging.\n\n## Announcement\n\nAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/445\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:N/UI:R/S:U/C:H/I:H/A:H`\n- **Weakness:** CWE-94 (Improper Control of Generation of Code ('Code Injection'))\n\n## Affected Platforms\n\n- **Platforms:** Windows, Linux, macOS","public_affected_ranges":[">= 11.0.0-preview.1, <= 11.0.0-rc.1"]}],"null_published_at":"2026-11-01T14:34:14.105Z","source_updated_at":"2026-10-19T19:19:34.000Z","source_disclosed_at":"2026-10-13T20:27:36.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Dated EPSS estimate updated; this is not a new disclosure or proof of exploitation.","null_first_observed_at":"2026-10-31T23:14:14.588Z"},{"id":"NVI-00011999","kind":"vulnerability","title":"Microsoft Security Advisory CVE-2026-102870 - ASP.NET Core Remote Code Execution Vulnerability","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-g27p-qf6j-c96c","CVE-2026-102870"],"plain_summary":"GitHub lists this reviewed advisory for Microsoft.AspNetCore.Components.WebAssembly.Server, Microsoft.AspNetCore.Components.WebAssembly.Server. 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-7fdd6665d0dbc8496cb5ec26b5dd4fdb"],"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":"2026-10-19T19:19:34.000Z","value":"8.8 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-7fdd6665d0dbc8496cb5ec26b5dd4fdb"}],"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-7fdd6665d0dbc8496cb5ec26b5dd4fdb","url":"https://github.com/advisories/GHSA-g27p-qf6j-c96c","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-g27p-qf6j-c96c","publisher":"GitHub Advisory Database","observed_at":"2026-10-31T23:14:14.588Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-7fdd6665d0dbc8496cb5ec26b5dd4fdb"],"technology":"Microsoft.AspNetCore.Components.WebAssembly.Server","known_exclusions":[],"conditions_summary":"## Executive summary\n\nMicrosoft is releasing this security advisory to provide information about a vulnerability in the Blazor WebAssembly debugger included in `Microsoft.AspNetCore.Components.WebAssembly.Server`. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability.\n\nThe Blazor WebAssembly debug proxy evaluates debugger expressions by generating and compiling C# source. Certain values originating in the application being debugged, including `ToString()` results, descriptions, and class names, are embedded in that generated source without consistent escaping. An attacker-controlled value can escape the generated string literal and execute code on a developer's machine when the developer evaluates an expression during debugging.\n\n## Announcement\n\nAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/445\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:N/UI:R/S:U/C:H/I:H/A:H`\n- **Weakness:** CWE-94 (Improper Control of Generation of Code ('Code Injection'))\n\n## Affected Platforms\n\n- **Platforms:** Windows, Linux, macOS","public_affected_ranges":[">= 10.0.0, <= 10.0.12"]},{"certainty":"source_listed","source_ids":["sr-7fdd6665d0dbc8496cb5ec26b5dd4fdb"],"technology":"Microsoft.AspNetCore.Components.WebAssembly.Server","known_exclusions":[],"conditions_summary":"## Executive summary\n\nMicrosoft is releasing this security advisory to provide information about a vulnerability in the Blazor WebAssembly debugger included in `Microsoft.AspNetCore.Components.WebAssembly.Server`. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability.\n\nThe Blazor WebAssembly debug proxy evaluates debugger expressions by generating and compiling C# source. Certain values originating in the application being debugged, including `ToString()` results, descriptions, and class names, are embedded in that generated source without consistent escaping. An attacker-controlled value can escape the generated string literal and execute code on a developer's machine when the developer evaluates an expression during debugging.\n\n## Announcement\n\nAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/445\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:N/UI:R/S:U/C:H/I:H/A:H`\n- **Weakness:** CWE-94 (Improper Control of Generation of Code ('Code Injection'))\n\n## Affected Platforms\n\n- **Platforms:** Windows, Linux, macOS","public_affected_ranges":[">= 11.0.0-preview.1, <= 11.0.0-rc.1"]}],"null_published_at":"2026-11-01T01:03:56.620Z","source_updated_at":"2026-10-19T19:19:34.000Z","source_disclosed_at":"2026-10-13T20:27:36.000Z","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":"2026-10-31T23:14:14.588Z"}],"next_cursor":null,"snapshot_revision":"42594"}