---
id: CVE-2026-70159
title: >-
  Allocation of resources without limits or throttling in ASP.NET Core allows an
  unauthorized attacker to deny service over a network.
summary: >-
  Allocation of resources without limits or throttling in ASP.NET Core allows an
  unauthorized attacker to deny service over a network.
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-770
vendor: Microsoft
product: Microsoft.AspNetCore.SignalR.Common
affected:
  - 'Microsoft.AspNetCore.SignalR.Common >= 10.0.0, <= 10.0.12'
  - 'Microsoft.AspNetCore.SignalR.Core >= 1.0.0, <= 1.2.13'
  - 'Microsoft.AspNetCore.SignalR.Common >= 11.0.0-preview.5, <= 11.0.0-rc.1'
  - 'Microsoft.AspNetCore.SignalR.Common >= 8.0.0, <= 8.0.31'
  - 'Microsoft.AspNetCore.SignalR.Common >= 9.0.0, <= 9.0.20'
patched:
  - Microsoft.AspNetCore.SignalR.Common 10.0.13
  - Microsoft.AspNetCore.SignalR.Core 1.2.14
  - Microsoft.AspNetCore.SignalR.Common 11.0.0-rc.2
  - Microsoft.AspNetCore.SignalR.Common 8.0.32
  - Microsoft.AspNetCore.SignalR.Common 9.0.21
published: '2026-10-13'
updated: '2026-10-13'
sourceUpdated: '2026-10-13T23:17:57.133'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-70159'
references:
  - url: 'https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70159'
    label: secure@microsoft.com
  - url: >-
      https://github.com/dotnet/aspnetcore/security/advisories/GHSA-334f-vvp4-7g6p
  - url: 'https://github.com/dotnet/announcements/issues/452'
  - url: 'https://github.com/dotnet/aspnetcore/discussions/69792'
  - url: 'https://github.com/advisories/GHSA-334f-vvp4-7g6p'
tags:
  - nvd
  - ghsa
  - nuget
aliases:
  - GHSA-334f-vvp4-7g6p
ecosystem: nuget
ingestedAt: '2026-10-13T19:43:29.015Z'
---

## Overview

Allocation of resources without limits or throttling in ASP.NET Core allows an unauthorized attacker to deny service over a network.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Package advisory (CVE-2026-70159)

Affected packages:

- `Microsoft.AspNetCore.SignalR.Common >= 10.0.0, <= 10.0.12`
- `Microsoft.AspNetCore.SignalR.Core >= 1.0.0, <= 1.2.13`
- `Microsoft.AspNetCore.SignalR.Common >= 11.0.0-preview.5, <= 11.0.0-rc.1`
- `Microsoft.AspNetCore.SignalR.Common >= 8.0.0, <= 8.0.31`
- `Microsoft.AspNetCore.SignalR.Common >= 9.0.0, <= 9.0.20`

Patched in:

- `Microsoft.AspNetCore.SignalR.Common 10.0.13`
- `Microsoft.AspNetCore.SignalR.Core 1.2.14`
- `Microsoft.AspNetCore.SignalR.Common 11.0.0-rc.2`
- `Microsoft.AspNetCore.SignalR.Common 8.0.32`
- `Microsoft.AspNetCore.SignalR.Common 9.0.21`

Source: https://github.com/advisories/GHSA-334f-vvp4-7g6p