RLSA-2026:41899 (CVE-2026-47300)

Vulnerability from osv_rocky – Published: 2026-07-23 06:01 – Updated: 2026-08-06 06:09 – Source website
VLAI
Summary
Important: .NET 9.0 security, bug fix, and enhancement update
Details

.NET is a managed-software framework. It implements a subset of the .NET framework APIs and several new APIs, and it includes a CLR implementation.

New versions of .NET that address a security vulnerability are now available. The updated versions are .NET SDK 9.0.119 and .NET Runtime 9.0.18.

Security Fix(es):

  • dotnet: SocketsHttpHandler Http2Connection - HTTP/2 SETTINGS/PING ACK flood causing OOM (CVE-2026-50651)

  • dotnet: .NET Core: Denial of Service via type confusion (CVE-2026-57108)

  • ASP.NET Core: ASP.NET Core: Denial of Service via uncontrolled resource allocation (CVE-2026-56170)

  • ASP.NET Core: ASP.NET Core: Privilege Escalation via Incorrect Authentication Algorithm (CVE-2026-47300)

  • ASP.NET Core: ASP.NET Core: Privilege Elevation via Authentication Bypass (CVE-2026-47303)

  • dotnet: .NET Security Feature Bypass Vulnerability (CVE-2026-47304)

  • dotnet: .NET: Denial of Service vulnerability due to uncontrolled resource allocation (CVE-2026-47302)

  • dotnet: .NET Framework: Privilege escalation via code injection (CVE-2026-50650)

  • dotnet: .NET: Security feature bypass due to incorrect authorization (CVE-2026-50528)

  • dotnet: .NET: Local code execution via deserialization of untrusted data (CVE-2026-50649)

  • dotnet: .NET: Local tampering via improper link resolution (CVE-2026-50526)

  • dotnet: .NET Framework: Local Code Execution via Protection Mechanism Failure (CVE-2026-50646)

  • dotnet: .NET: Denial of Service due to uncontrolled resource allocation (CVE-2026-50525)

  • dotnet: .NET Framework: Denial of Service via network-based buffer overflow (CVE-2026-50527)

  • dotnet: .NET Framework: Remote Denial of Service due to uncontrolled resource allocation (CVE-2026-50648)

  • .NET: .NET: Network Spoofing Vulnerability (CVE-2026-50659)

  • dotnet: .NET Framework: Denial of Service via improper input validation (CVE-2026-50524)

Bug Fix(es) and Enhancement(s):

  • Update .NET 9.0 to SDK 9.0.119 and Runtime 9.0.18 (JIRA:Rocky Linux-192469)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Severity
8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Credits
Rocky Enterprise Software Foundation
Red Hat
References
To clipboard 

{
  "affected": [
    {
      "package": {
        "ecosystem": "Rocky Linux:8",
        "name": "dotnet9.0",
        "purl": "pkg:rpm/rocky-linux/dotnet9.0?distro=rocky-linux-8\u0026epoch=0"
      },
      "ranges": [
        {
          "database_specific": {
            "yum_repository": "AppStream"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0:9.0.119-1.el8_10"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "credits": [
    {
      "name": "Rocky Enterprise Software Foundation"
    },
    {
      "name": "Red Hat"
    }
  ],
  "details": ".NET is a managed-software framework. It implements a subset of the .NET framework APIs and several new APIs, and it includes a CLR implementation.\n\nNew versions of .NET that address a security vulnerability are now available. The updated versions are .NET SDK 9.0.119 and .NET Runtime 9.0.18.\n\nSecurity Fix(es):\n\n* dotnet: SocketsHttpHandler Http2Connection - HTTP/2 SETTINGS/PING ACK flood causing OOM (CVE-2026-50651)\n\n* dotnet: .NET Core: Denial of Service via type confusion (CVE-2026-57108)\n\n* ASP.NET Core: ASP.NET Core: Denial of Service via uncontrolled resource allocation (CVE-2026-56170)\n\n* ASP.NET Core: ASP.NET Core: Privilege Escalation via Incorrect Authentication Algorithm (CVE-2026-47300)\n\n* ASP.NET Core: ASP.NET Core: Privilege Elevation via Authentication Bypass (CVE-2026-47303)\n\n* dotnet: .NET Security Feature Bypass Vulnerability (CVE-2026-47304)\n\n* dotnet: .NET: Denial of Service vulnerability due to uncontrolled resource allocation (CVE-2026-47302)\n\n* dotnet: .NET Framework: Privilege escalation via code injection (CVE-2026-50650)\n\n* dotnet: .NET: Security feature bypass due to incorrect authorization (CVE-2026-50528)\n\n* dotnet: .NET: Local code execution via deserialization of untrusted data (CVE-2026-50649)\n\n* dotnet: .NET: Local tampering via improper link resolution (CVE-2026-50526)\n\n* dotnet: .NET Framework: Local Code Execution via Protection Mechanism Failure (CVE-2026-50646)\n\n* dotnet: .NET: Denial of Service due to uncontrolled resource allocation (CVE-2026-50525)\n\n* dotnet: .NET Framework: Denial of Service via network-based buffer overflow (CVE-2026-50527)\n\n* dotnet: .NET Framework: Remote Denial of Service due to uncontrolled resource allocation (CVE-2026-50648)\n\n* .NET: .NET: Network Spoofing Vulnerability (CVE-2026-50659)\n\n* dotnet: .NET Framework: Denial of Service via improper input validation (CVE-2026-50524)\n\nBug Fix(es) and Enhancement(s):\n\n* Update .NET 9.0 to SDK 9.0.119 and Runtime 9.0.18 (JIRA:Rocky Linux-192469)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.",
  "id": "RLSA-2026:41899",
  "modified": "2026-08-06T06:09:49.649847Z",
  "published": "2026-07-23T06:01:27.843611Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://errata.rockylinux.org/RLSA-2026:41899"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2499217"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2500109"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2500189"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2500492"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2500502"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2500509"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2500515"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2500556"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2500562"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2500563"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2500565"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2500577"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2500580"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2500581"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2500587"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2500589"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2500593"
    }
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Important: .NET 9.0 security, bug fix, and enhancement update",
  "upstream": [
    "CVE-2026-47300",
    "CVE-2026-47302",
    "CVE-2026-47303",
    "CVE-2026-47304",
    "CVE-2026-50524",
    "CVE-2026-50525",
    "CVE-2026-50526",
    "CVE-2026-50527",
    "CVE-2026-50528",
    "CVE-2026-50646",
    "CVE-2026-50648",
    "CVE-2026-50649",
    "CVE-2026-50650",
    "CVE-2026-50651",
    "CVE-2026-50659",
    "CVE-2026-56170",
    "CVE-2026-57108"
  ]
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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