Security advisory

{
  "id": "40bf1b4bbc20fa758e3eab6cab1e9a40f0f05bab4e319265cc530bdb8a7a5e80",
  "url": "https://osv.dev/vulnerability/CVE-2021-34532",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-34532",
    "summary": "ASP.NET Core and Visual Studio Information Disclosure Vulnerability",
    "evidence": "osv:CVE-2021-34532",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2021-34532",
      "aliases": [
        "BIT-aspnet-core-2021-34532",
        "CVE-2021-34532",
        "GHSA-q7cg-43mg-qp69"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/dotnet/aspnetcore",
              "type": "GIT",
              "events": [
                {
                  "introduced": "00e08d8c11f4e9649492342c9c613a758efd2e4d"
                },
                {
                  "last_affected": "2cd777f06183bf5639578ff3a4162cd3f576e989"
                },
                {
                  "introduced": "03019875e4eab279a99ba3ba5ee75fb0e4935ce6"
                },
                {
                  "last_affected": "535da07711bd5e2d8e44c0ea10bd2c8be1a9a584"
                },
                {
                  "introduced": "a7515261e44b7d418e8ccf2bc4437e83dd636b29"
                },
                {
                  "last_affected": "ae2eabad0e49302d0632a7dde917fdc68d960dc4"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:microsoft:asp.net_core:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "2.1"
                      },
                      {
                        "last_affected": "2.1.2"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:microsoft:asp.net_core:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "3.1"
                      },
                      {
                        "last_affected": "3.1.17"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:microsoft:asp.net_core:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "5.0"
                      },
                      {
                        "last_affected": "5.0.8"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-34532.json"
          }
        }
      ],
      "modified": "2026-10-24T10:30:29.763091363Z",
      "provider": "osv",
      "references": [
        "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-34532",
        "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-34532"
      ],
      "provider_metadata": {
        "unresolved_ranges": [
          {
            "cpes": [
              "cpe:2.3:a:microsoft:visual_studio_2019:*:*:*:*:*:*:*:*"
            ],
            "vendor_product": "microsoft:visual_studio_2019",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "16.0"
                  },
                  {
                    "last_affected": "16.10"
                  }
                ],
                "source": "CPE_RANGE"
              }
            ]
          },
          {
            "cpes": [
              "cpe:2.3:a:microsoft:visual_studio_2019:8.10:*:*:*:*:macos:*:*"
            ],
            "vendor_product": "microsoft:visual_studio_2019",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "8.10"
                  },
                  {
                    "last_affected": "8.10"
                  }
                ],
                "source": "CPE_STRING"
              }
            ]
          }
        ]
      }
    },
    "related_cves": [
      {
        "value": "CVE-2021-34532",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 432397,
  "published_at": "2021-08-12T18:15:09.337+00:00"
}