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TI-2019-00720 Aliases CVE-2019-0982GHSA-4jxx-4qxw-prxm

A denial of service vulnerability exists when ASP.NET Core improperly handles web…

Priority MEDIUM 42CWE-19Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 3.0 · NVD. Fix status from CNA and GitHub.

Summary

A denial of service vulnerability exists when ASP.NET Core improperly handles web requests, aka 'ASP.NET Core Denial of Service Vulnerability'.

Why it matters now

EPSS 0.06681 93rd percentileScored 2026-11-07
Fix Fixed Microsoft.AspNetCore.SignalR.Protocols.MessagePack (NuGet): 1.1.5, 1.0.11

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
MicrosoftASP.NET Core2.1; 2.2—No fix listedCNA
—Microsoft.AspNetCore.SignalR.Protocols.MessagePack (NuGet)1.1.0 to before 1.1.51.1.5Patch availableGHSA-4jxx-4qxw-prxm
—Microsoft.AspNetCore.SignalR.Protocols.MessagePack (NuGet)1.0.0 to before 1.0.111.0.11Patch availableGHSA-4jxx-4qxw-prxm
  • ASP.NET Core VendorMicrosoft Affected 2.1; 2.2 Fixed in — No fix listed CNA
  • Microsoft.AspNetCore.SignalR.Protocols.MessagePack (NuGet) Vendor— Affected 1.1.0 to before 1.1.5 Fixed in 1.1.5 Patch available GHSA-4jxx-4qxw-prxm
  • Microsoft.AspNetCore.SignalR.Protocols.MessagePack (NuGet) Vendor— Affected 1.0.0 to before 1.0.11 Fixed in 1.0.11 Patch available GHSA-4jxx-4qxw-prxm

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:microsoft:asp.net_core:2.1:*:*:*:*:*:*:*2.1VulnerableMicrosoft
cpe:2.3:a:microsoft:asp.net_core:2.2:*:*:*:*:*:*:*2.2VulnerableMicrosoft
  • cpe:2.3:a:microsoft:asp.net_core:2.1:*:*:*:*:*:*:* Versions 2.1 Vulnerable ·Microsoft
  • cpe:2.3:a:microsoft:asp.net_core:2.2:*:*:*:*:*:*:* Versions 2.2 Vulnerable ·Microsoft

Remediation

  • Fix · GHSA-4jxx-4qxw-prxm Microsoft.AspNetCore.SignalR.Protocols.MessagePack (NuGet) Fixed in 1.1.5 Advisory →
  • Fix · GHSA-4jxx-4qxw-prxm Microsoft.AspNetCore.SignalR.Protocols.MessagePack (NuGet) Fixed in 1.0.11 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2019-0982
  2. 2026-10-03 Alias added: GHSA-4jxx-4qxw-prxm

References

Patch 1

Advisory 1

Other 2

  • TI-2023-23979 The HTTP/2 protocol allows a denial of service (server resource consumption) because… KEVCVSS 3.1HIGH 7.5
  • TI-2023-19596 .NET and Visual Studio Denial of Service Vulnerability KEVCVSS 3.1HIGH 7.5
  • TI-2025-34970 ASP.NET Security Feature Bypass Vulnerability CVSS 3.1CRITICAL 9.9
  • TI-2024-14164 .NET Denial of Service Vulnerability CVSS 3.1HIGH 7.5
  • TI-2023-18092 ASP.NET Core Denial of Service Vulnerability CVSS 3.1HIGH 8.2
  • TI-2023-18392 ASP.NET Core Security Feature Bypass Vulnerability CVSS 3.1MEDIUM 6.2
See all 40 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences