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GHSA-V3F6-M9J2-437P

Vulnerability from github – Published: 2026-09-08 18:32 – Updated: 2026-09-08 21:14
VLAI
Summary
Duplicate Advisory: Microsoft Security Advisory CVE-2026-69304 – ASP.NET Core Denial of Service Vulnerability
Details

Duplicate Advisory

This advisory has been withdrawn because it is a duplicate of GHSA-8cp2-47hg-mfgh. This link is maintained to preserve external references.

Original Description

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

Severity
5.9 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
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{
  "affected": [
    {
      "package": {
        "ecosystem": "NuGet",
        "name": "Microsoft.AspNetCore.Server.IISIntegration"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "11.0.0-preview.1"
            },
            {
              "fixed": "11.0.0-rc.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 8.0.30"
      },
      "package": {
        "ecosystem": "NuGet",
        "name": "Microsoft.AspNetCore.Server.IISIntegration"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "8.0.0"
            },
            {
              "fixed": "8.0.31"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 9.0.19"
      },
      "package": {
        "ecosystem": "NuGet",
        "name": "Microsoft.AspNetCore.Server.IISIntegration"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "9.0.0"
            },
            {
              "fixed": "9.0.20"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 10.0.11"
      },
      "package": {
        "ecosystem": "NuGet",
        "name": "Microsoft.AspNetCore.Server.IISIntegration"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "10.0.0"
            },
            {
              "fixed": "10.0.12"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [],
  "database_specific": {
    "cwe_ids": [
      "CWE-409"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-09-08T21:14:33Z",
    "nvd_published_at": "2026-09-08T18:18:46Z",
    "severity": "MODERATE"
  },
  "details": "### Duplicate Advisory\nThis advisory has been withdrawn because it is a duplicate of GHSA-8cp2-47hg-mfgh. This link is maintained to preserve external references.\n\n### Original Description\nImproper handling of highly compressed data (data amplification) in ASP.NET Core allows an unauthorized attacker to deny service over a network.",
  "id": "GHSA-v3f6-m9j2-437p",
  "modified": "2026-09-08T21:14:33Z",
  "published": "2026-09-08T18:32:21Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-69304"
    },
    {
      "type": "WEB",
      "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69304"
    },
    {
      "type": "PACKAGE",
      "url": "https://www.nuget.org/packages/Microsoft.AspNetCore.Server.IISIntegration"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Duplicate Advisory: Microsoft Security Advisory CVE-2026-69304 \u2013 ASP.NET Core Denial of Service Vulnerability",
  "withdrawn": "2026-09-08T21:14:33Z"
}



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Nomenclature

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