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CVE-2019-0982 — Denial of service in...

HIGH

Denial of service in ASP.NET Core

Published May 24, 2022Updated December 7, 2024Source: osv

Summary

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

Advisory Timeline

  • First published May 24, 2022 (1602 days ago).
  • Last revised December 7, 2024 — 928 days after initial publication.

Remediation

Upgrade to the fixed version using your package manager.

NuGet
Update Microsoft.AspNetCore.SignalR.Protocols.MessagePack to 1.1.5 or later
dotnet add package Microsoft.AspNetCore.SignalR.Protocols.MessagePack --version 1.1.5
NuGet
Update Microsoft.AspNetCore.SignalR.Protocols.MessagePack to 1.0.11 or later
dotnet add package Microsoft.AspNetCore.SignalR.Protocols.MessagePack --version 1.0.11

After upgrading, run your dependency scanner again to confirm the vulnerability is resolved.

Affected Packages (2)

Affects 1 ecosystem: nuget (1).

PackageEcosystemAffectedFixed In
Microsoft.AspNetCore.SignalR.Protocols.MessagePack
nuget
1.1.01.1.5
Microsoft.AspNetCore.SignalR.Protocols.MessagePack
nuget
1.0.0, 1.0.1, 1.0.2, 1.0.3 (+1 more)1.0.11

CVSS Score Breakdown

What the CVSS (Common Vulnerability Scoring System) 7.5 score means for each attack dimension.

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

Frequently Asked Questions

What is CVE-2019-0982?
Denial of service in ASP.NET Core This vulnerability has been assigned a severity rating of HIGH (CVSS score: 7.5/10).
How do I check if my project is affected by CVE-2019-0982?
CVE-2019-0982 affects Microsoft.AspNetCore.SignalR.Protocols.MessagePack. Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2019-0982 and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score
7.5

High exploitability or significant impact. Prioritize remediation within days.

Also Known As

GHSA-4jxx-4qxw-prxm

Related CVEs

  • CVE-2026-45591
    HIGH

    Microsoft Security Advisory CVE-2026-45591 – ASP.NET Core Denial of Service Vulnerability

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    ImageSharp: ICC LUT16 output channel count can write beyond Vector4

  • CVE-2026-106115
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    ImageSharp: TIFF CCITT T6 encoder writes beyond an undersized output buffer

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