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ASP.NET Core Denial of Service Vulnerability

Type: advisorySource: Official CVE ListRisk context updated1 source record

Improper handling of highly compressed data (data amplification) in ASP.NET Core allows an unauthorized attacker to deny service over a network.

Announced Source revision 2
Original source ↗
CVE context updated. The publisher announcement is unchanged.

CVE-2026-69304

Primary source · Revision 2

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-69304

.NET 10.0

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

.NET 8.0

Source reference: /containers/cna/affected/1/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

.NET 9.0

Source reference: /containers/cna/affected/2/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

ASP.NET Core 10.0

Source reference: /containers/cna/affected/3/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

ASP.NET Core 11.0

Source reference: /containers/cna/affected/4/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

ASP.NET Core 8.0

Source reference: /containers/cna/affected/5/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

ASP.NET Core 9.0

Source reference: /containers/cna/affected/6/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Microsoft Visual Studio 2022 version 17.14

Source reference: /containers/cna/affected/7/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Microsoft Visual Studio 2026 version 18.9

Source reference: /containers/cna/affected/8/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "vendor": "Microsoft",
    "product": ".NET 10.0",
    "versions": [
      {
        "status": "affected",
        "version": "10.0.0",
        "lessThan": "10.0.12",
        "versionType": "custom"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": ".NET 8.0",
    "versions": [
      {
        "status": "affected",
        "version": "8.0.0",
        "lessThan": "8.0.31",
        "versionType": "custom"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": ".NET 9.0",
    "versions": [
      {
        "status": "affected",
        "version": "9.0.0",
        "lessThan": "9.0.20",
        "versionType": "custom"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "ASP.NET Core 10.0",
    "versions": [
      {
        "status": "affected",
        "version": "10.0",
        "lessThan": "10.0.12",
        "versionType": "custom"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "ASP.NET Core 11.0",
    "versions": [
      {
        "status": "affected",
        "version": "11.0",
        "lessThan": "11.0 RC1",
        "versionType": "custom"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "ASP.NET Core 8.0",
    "versions": [
      {
        "status": "affected",
        "version": "8.0",
        "lessThan": "8.0.31",
        "versionType": "custom"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "ASP.NET Core 9.0",
    "versions": [
      {
        "status": "affected",
        "version": "9.0",
        "lessThan": "9.0.20",
        "versionType": "custom"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Microsoft Visual Studio 2022 version 17.14",
    "versions": [
      {
        "status": "affected",
        "version": "17.14.0",
        "lessThan": "17.14.40",
        "versionType": "custom"
      }
    ]
  },
  {
    "vendor": "Microsoft",
    "product": "Microsoft Visual Studio 2026 version 18.9",
    "versions": [
      {
        "status": "affected",
        "version": "18.9.0",
        "lessThan": "18.9.3",
        "versionType": "custom"
      }
    ]
  }
]
Related CVEs
CVE-2026-69304

Source reference: /cveMetadata/cveId

Publisher severity

medium

Source reference: /containers/cna/metrics

Linked CVE context

These ratings describe the referenced vulnerabilities and products. They are not a severity rating for every application using this dependency.

CVE-2026-69304 · Medium

dotnet

Event
#60874 · Revision 2
Added to Heist Feed
Publisher date
Read the original announcement