{
  "schema_version": "1.4.0",
  "id": "GHSA-cmhx-cq75-c4mj",
  "modified": "2023-02-21T18:57:08Z",
  "published": "2021-08-04T21:03:46Z",
  "aliases": [
    "CVE-2019-0820"
  ],
  "summary": "Regular Expression Denial of Service in System.Text.RegularExpressions",
  "details": "A denial of service vulnerability exists when .NET Framework and .NET Core improperly process RegEx strings, aka '.NET Framework and .NET Core Denial of Service Vulnerability'. This CVE ID is unique from CVE-2019-0980, CVE-2019-0981.",
  "severity": [
    {
      "type": "CVSS_V3",
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
    }
  ],
  "affected": [
    {
      "package": {
        "ecosystem": "NuGet",
        "name": "System.Text.RegularExpressions"
      },
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "4.3.0"
            },
            {
              "fixed": "4.3.1"
            }
          ]
        }
      ]
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2019-0820"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/errata/RHSA-2019:1259"
    },
    {
      "type": "WEB",
      "url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0820"
    }
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-1333",
      "CWE-400"
    ],
    "severity": "HIGH",
    "github_reviewed": true,
    "github_reviewed_at": "2021-08-04T21:03:27Z",
    "nvd_published_at": "2019-05-16T19:29:00Z"
  }
}