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NuGet package

microsoft.aspnetcore.server.iisintegration

Open actionable advisories and recorded vendor fixes. This public package view has no inventory attached and cannot establish whether your deployment is affected. A vendor fix never resolves your finding; verify your installed version and the source guidance.

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1 actionable advisory, newest first. Withdrawn advisories and news are excluded. Coverage is partial.

  1. Medium, CVSS 5.9NuGetAmendedPublished

    Microsoft Security Advisory CVE-2026-69304 – ASP.NET Core Denial of Service Vulnerability

    CVE-2026-69304 · GHSA-8cp2-47hg-mfgh

    Affected
    • NuGet microsoft.aspnetcore.server.iisintegration >= 11.0.0-preview.1, < 11.0.0-rc.1; >= 8.0.0, <= 8.0.30; >= 9.0.0, <= 9.0.19; >= 10.0.0, <= 10.0.11
    Fixed in
    9.0.2010.0.1211.0.0-rc.18.0.31· Vendor fix available
    Issue
    Microsoft Security Advisory CVE-2026-69304 – ASP.NET Core Denial of Service Vulnerability Executive summary Microsoft is releasing this security advisory to provide information about a vulnerability in ASP.NET Core IIS out-of-process hosting and request decompression. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. The IIS Middleware for ASP.NET Core did not properly constrain decompression of certain types of request, leading to excess memory consumption and a Denial of Service. Announcement Announcement for this issue can be found at https://github.com/dotnet/announcements/issues/443 CVSS Details - Version: 3.1 - Severity: Medium - Score: 5.9 - Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness: CWE-409 (Improper Handling of Highly Compressed Data (Data Amplification)) Affected Platforms - Platforms: Windows / IIS out-of-process - Architectures: All <a name="affected-packages"</aAffected Packages…

    Recommended action: Upgrade to 11.0.0-rc.1 (pre-release), 10.0.12, 9.0.20 or 8.0.31 by release line, then redeploy and verify.A vendor fix does not resolve your finding until you verify it in your own systems.

    Sources:osv.dev (1)github.com (2)Source checked Evidence →