{"items":[{"id":"NVI-00012138","kind":"vulnerability","title":"Microsoft Security Advisory CVE-2026-92707 - ASP.NET Core Denial of Service Vulnerability","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-86xp-94pg-8r6r"],"plain_summary":"GitHub lists this reviewed advisory for Microsoft.AspNetCore.SignalR.Protocols.MessagePack, Microsoft.AspNetCore.SignalR.Protocols.MessagePack, Microsoft.AspNetCore.SignalR.Protocols.MessagePack, Microsoft.AspNetCore.SignalR.Protocols.MessagePack. 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-b3fd9105346bd4020aeaa34656139d79"],"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":"2026-10-13T20:12:01.000Z","value":"5.3 medium","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-b3fd9105346bd4020aeaa34656139d79"}],"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-b3fd9105346bd4020aeaa34656139d79","url":"https://github.com/advisories/GHSA-86xp-94pg-8r6r","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-86xp-94pg-8r6r","publisher":"GitHub Advisory Database","observed_at":"2026-10-31T23:14:22.124Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-b3fd9105346bd4020aeaa34656139d79"],"technology":"Microsoft.AspNetCore.SignalR.Protocols.MessagePack","known_exclusions":[],"conditions_summary":"## Executive summary\n\nMicrosoft is releasing this security advisory to provide information about a vulnerability in Microsoft.AspNetCore.SignalR.Protocols.MessagePack; MessagePack; MessagePack.Annotations; MessagePackAnalyzer. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability.\n\nSignalR's MessagePack protocol can consume excessive memory while deserializing deeply nested attacker-controlled arrays, resulting in unauthenticated remote denial of service.\n\n## Announcement\n\nAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/473\n\n## CVSS Details\n\n- **Version:** 3.1\n- **Severity:** Moderate\n- **Score:** 5.3\n- **Vector:** `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L`\n- **Weakness:** CWE-1325 (Improperly Controlled Sequential Memory Allocation)\n\n## Affected Platforms\n\n- **Platforms:** Windows, Linux, macOS\n- **Architectures:** All\n\n## Affected Packages\n\nThe vulnerability affects Microsoft .NET projects that use an affected package version listed below.\n\nPackage name | Affected version | Patched version\n------------ | ---------------- | -------------","public_affected_ranges":[">= 10.0.0, <= 10.0.12"]},{"certainty":"source_listed","source_ids":["sr-b3fd9105346bd4020aeaa34656139d79"],"technology":"Microsoft.AspNetCore.SignalR.Protocols.MessagePack","known_exclusions":[],"conditions_summary":"## Executive summary\n\nMicrosoft is releasing this security advisory to provide information about a vulnerability in Microsoft.AspNetCore.SignalR.Protocols.MessagePack; MessagePack; MessagePack.Annotations; MessagePackAnalyzer. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability.\n\nSignalR's MessagePack protocol can consume excessive memory while deserializing deeply nested attacker-controlled arrays, resulting in unauthenticated remote denial of service.\n\n## Announcement\n\nAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/473\n\n## CVSS Details\n\n- **Version:** 3.1\n- **Severity:** Moderate\n- **Score:** 5.3\n- **Vector:** `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L`\n- **Weakness:** CWE-1325 (Improperly Controlled Sequential Memory Allocation)\n\n## Affected Platforms\n\n- **Platforms:** Windows, Linux, macOS\n- **Architectures:** All\n\n## Affected Packages\n\nThe vulnerability affects Microsoft .NET projects that use an affected package version listed below.\n\nPackage name | Affected version | Patched version\n------------ | ---------------- | -------------","public_affected_ranges":[">= 11.0.0-preview.5, <= 11.0.0-rc.1"]},{"certainty":"source_listed","source_ids":["sr-b3fd9105346bd4020aeaa34656139d79"],"technology":"Microsoft.AspNetCore.SignalR.Protocols.MessagePack","known_exclusions":[],"conditions_summary":"## Executive summary\n\nMicrosoft is releasing this security advisory to provide information about a vulnerability in Microsoft.AspNetCore.SignalR.Protocols.MessagePack; MessagePack; MessagePack.Annotations; MessagePackAnalyzer. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability.\n\nSignalR's MessagePack protocol can consume excessive memory while deserializing deeply nested attacker-controlled arrays, resulting in unauthenticated remote denial of service.\n\n## Announcement\n\nAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/473\n\n## CVSS Details\n\n- **Version:** 3.1\n- **Severity:** Moderate\n- **Score:** 5.3\n- **Vector:** `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L`\n- **Weakness:** CWE-1325 (Improperly Controlled Sequential Memory Allocation)\n\n## Affected Platforms\n\n- **Platforms:** Windows, Linux, macOS\n- **Architectures:** All\n\n## Affected Packages\n\nThe vulnerability affects Microsoft .NET projects that use an affected package version listed below.\n\nPackage name | Affected version | Patched version\n------------ | ---------------- | -------------","public_affected_ranges":[">= 8.0.0, <= 8.0.31"]},{"certainty":"source_listed","source_ids":["sr-b3fd9105346bd4020aeaa34656139d79"],"technology":"Microsoft.AspNetCore.SignalR.Protocols.MessagePack","known_exclusions":[],"conditions_summary":"## Executive summary\n\nMicrosoft is releasing this security advisory to provide information about a vulnerability in Microsoft.AspNetCore.SignalR.Protocols.MessagePack; MessagePack; MessagePack.Annotations; MessagePackAnalyzer. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability.\n\nSignalR's MessagePack protocol can consume excessive memory while deserializing deeply nested attacker-controlled arrays, resulting in unauthenticated remote denial of service.\n\n## Announcement\n\nAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/473\n\n## CVSS Details\n\n- **Version:** 3.1\n- **Severity:** Moderate\n- **Score:** 5.3\n- **Vector:** `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L`\n- **Weakness:** CWE-1325 (Improperly Controlled Sequential Memory Allocation)\n\n## Affected Platforms\n\n- **Platforms:** Windows, Linux, macOS\n- **Architectures:** All\n\n## Affected Packages\n\nThe vulnerability affects Microsoft .NET projects that use an affected package version listed below.\n\nPackage name | Affected version | Patched version\n------------ | ---------------- | -------------","public_affected_ranges":[">= 9.0.0, <= 9.0.20"]}],"null_published_at":"2026-11-01T01:04:01.245Z","source_updated_at":"2026-10-13T20:12:01.000Z","source_disclosed_at":"2026-10-13T20:11:58.000Z","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":"2026-10-31T23:14:22.124Z"}],"next_cursor":null,"snapshot_revision":"42594"}