Security advisory

{
  "id": "0aa74535ec96da78e80320cdbafd1c00b70d4d4443f9e0680cfe7d886031e5b2",
  "url": "https://osv.dev/vulnerability/CVE-2026-45490",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2026-45490",
    "summary": "Improper authorization in .NET allows an authorized attacker to elevate privileges locally.",
    "evidence": "osv:CVE-2026-45490",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-45490",
      "aliases": [
        "BIT-dotnet-2026-45490",
        "BIT-dotnet-sdk-2026-45490",
        "CVE-2026-45490"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/dotnet/core",
              "type": "GIT",
              "events": [
                {
                  "introduced": "d78b3180414d35d6c7d136db753474e2ae2b33df"
                },
                {
                  "fixed": "b86d3269327efd2cf7bbffab6c0b029d55545972"
                },
                {
                  "introduced": "e18becd6171b8eb0eb4ec7ea8a0280cacfcee36b"
                },
                {
                  "fixed": "d816e844173174eda81ec457144442c46edb6055"
                },
                {
                  "introduced": "0e06b3b745aaf3f2f96e5f163773d20f8c7f7f50"
                },
                {
                  "fixed": "d816e844173174eda81ec457144442c46edb6055"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "8.0.0"
                      },
                      {
                        "fixed": "8.0.28"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "9.0.0"
                      },
                      {
                        "fixed": "9.0.17"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "10.0.0"
                      },
                      {
                        "fixed": "10.0.9"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v11.0.0-preview.4",
            "v9.0.16",
            "v8.0.27",
            "v10.0.8",
            "v10.0.7",
            "v11.0.0-preview.3",
            "v10.0.6",
            "v9.0.15",
            "v8.0.26",
            "v10.0.5",
            "v9.0.14",
            "v8.0.25",
            "v11.0.0-preview.2",
            "v10.0.4",
            "v11.0.0-preview.1",
            "v9.0.13",
            "v8.0.24",
            "v10.0.3",
            "v9.0.12",
            "v8.0.23",
            "v10.0.2",
            "v10.0.1",
            "v9.0.11",
            "v8.0.22",
            "v10.0.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-45490.json"
          }
        }
      ],
      "modified": "2026-10-24T10:30:44.348680152Z",
      "provider": "osv",
      "references": [
        "https://access.redhat.com/security/cve/CVE-2026-45490",
        "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-45490.json",
        "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45490",
        "https://bugzilla.redhat.com/show_bug.cgi?id=2487184"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2026-45490",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 435848,
  "published_at": "2026-06-09T17:17:25.447+00:00"
}