Critical: .NET 9.0 security, bug fix, and enhancement update

{
  "id": "a7469e1e50fb7c0ba034b2f97ce483026688e52c2e038b3fdbf5d9901398d97c",
  "url": "https://osv.dev/vulnerability/RLSA-2026%3A86172",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Critical: .NET 9.0 security, bug fix, and enhancement update",
    "summary": ".NET is a fast, lightweight and modular platform for creating cross platform applications that work on Linux, macOS and Windows. It particularly focuses on creating console applications, web applications and micro-services. .NET contains a runtime conforming to .NET Standards a set of framework libraries, an SDK containing compilers and a 'dotnet' application to drive everything. SDK version: 9.0.122 Runtime version: 9.0.21 Security Fix(es): * dotnet10.0: dotnet9.0: dotnet: dotnet8.0: .NET Denial of Service Vulnerability (CVE-2026-58280) * dotnet10.0: dotnet8.0: dotnet9.0: dotnet: .NET Information Disclosure Vulnerability (CVE-2026-66822) * dotnet9.0: dotnet: dotnet10.0: dotnet8.0: .NET Denial of Service Vulnerability (CVE-2026-69651) * dotnet8.0: dotnet10.0: dotnet: dotnet9.0: ASP.NET Core Denial of Service Vulnerability (CVE-2026-70159) * dotnet10.0: dotnet8.0: dotnet9.0: ASP.NET Core Elevation of Privilege Vulnerability (CVE-2026-70175) * dotnet10.0: dotnet8.0: dotnet9.0: ASP.NET Core Elevation of Privilege Vulnerability (CVE-2026-70179) * dotnet9.0: dotnet8.0: dotnet10.0: ASP.NET Core Denial of Service Vulnerability (CVE-2026-70181) * dotnet: dotnet10.0: dotnet9.0: dotnet8.0: ASP.NET Core Elevation of Privilege Vulnerability (CVE-2026-70183) * dotnet10.0: dotnet9.0: dotnet8.0: ASP.NET Core Denial of Service Vulnerability (CVE-2026-70186) * dotnet: ASP.NET Core Security Feature Bypass Vulnerability (CVE-2026-70188) * dotnet9.0: dotnet8.0: dotnet10.0: ASP.NET Core Denial of",
    "evidence": "osv:RLSA-2026:86172",
    "products": [
      {
        "name": {
          "value": "dotnet9.0",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "0:9.0.122-1.el10_2",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "critical",
    "structured": {
      "id": "RLSA-2026:86172",
      "aliases": [
        "RLSA-2026:86172"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "0:9.0.122-1.el10_2"
                }
              ],
              "database_specific": {
                "yum_repository": "AppStream"
              }
            }
          ],
          "package": {
            "name": "dotnet9.0",
            "purl": "pkg:rpm/rocky-linux/dotnet9.0?distro=rocky-linux-10&epoch=0",
            "ecosystem": "Rocky Linux:10"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/resf-osv-data/RLSA-2026:86172.json"
          }
        }
      ],
      "modified": "2026-10-22T00:30:03.395176928Z",
      "provider": "osv",
      "upstream": [
        "CVE-2026-58280",
        "CVE-2026-66822",
        "CVE-2026-69651",
        "CVE-2026-70159",
        "CVE-2026-70175",
        "CVE-2026-70179",
        "CVE-2026-70181",
        "CVE-2026-70183",
        "CVE-2026-70186",
        "CVE-2026-70188",
        "CVE-2026-70196",
        "CVE-2026-88092",
        "CVE-2026-92707",
        "CVE-2026-96225",
        "CVE-2026-96230",
        "CVE-2026-96231",
        "CVE-2026-96233",
        "CVE-2026-96236",
        "CVE-2026-96237",
        "CVE-2026-96238"
      ],
      "references": [
        "https://errata.rockylinux.org/RLSA-2026:86172",
        "https://bugzilla.redhat.com/show_bug.cgi?id=2548778",
        "https://bugzilla.redhat.com/show_bug.cgi?id=2548781",
        "https://bugzilla.redhat.com/show_bug.cgi?id=2548784",
        "https://bugzilla.redhat.com/show_bug.cgi?id=2548786",
        "https://bugzilla.redhat.com/show_bug.cgi?id=2548787",
        "https://bugzilla.redhat.com/show_bug.cgi?id=2548790",
        "https://bugzilla.redhat.com/show_bug.cgi?id=2548791",
        "https://bugzilla.redhat.com/show_bug.cgi?id=2548792",
        "https://bugzilla.redhat.com/show_bug.cgi?id=2548793",
        "https://bugzilla.redhat.com/show_bug.cgi?id=2548796",
        "https://bugzilla.redhat.com/show_bug.cgi?id=2548798",
        "https://bugzilla.redhat.com/show_bug.cgi?id=2548799",
        "https://bugzilla.redhat.com/show_bug.cgi?id=2548800",
        "https://bugzilla.redhat.com/show_bug.cgi?id=2548803",
        "https://bugzilla.redhat.com/show_bug.cgi?id=2548804",
        "https://bugzilla.redhat.com/show_bug.cgi?id=2548805",
        "https://bugzilla.redhat.com/show_bug.cgi?id=2548806",
        "https://bugzilla.redhat.com/show_bug.cgi?id=2548807",
        "https://bugzilla.redhat.com/show_bug.cgi?id=2548808",
        "https://bugzilla.redhat.com/show_bug.cgi?id=2548809",
        "https://access.redhat.com/errata/RHSA-2026:86172"
      ],
      "provider_metadata": {
        "license": "CC-BY-4.0",
        "license_url": "https://creativecommons.org/licenses/by/4.0/",
        "source_advisory": "RHSA-2026:86172"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-58280",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-66822",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-69651",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-70159",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-70175",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-70179",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-70181",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-70183",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-70186",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-70188",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-70196",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-88092",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-92707",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-96225",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-96230",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-96231",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-96233",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-96236",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-96237",
        "evidence": "/upstream"
      },
      {
        "value": "CVE-2026-96238",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 401155,
  "published_at": "2026-10-22T00:08:23.571327+00:00"
}