{
  "affected": [
    {
      "database_specific": {
        "unresolved_ranges": [
          {
            "events": [
              {
                "introduced": "0"
              },
              {
                "last_affected": "33"
              }
            ]
          },
          {
            "events": [
              {
                "introduced": "0"
              },
              {
                "last_affected": "34"
              }
            ]
          },
          {
            "events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "21.3"
              }
            ]
          }
        ]
      },
      "ranges": [
        {
          "database_specific": {
            "versions": [
              {
                "introduced": "2.4.0"
              },
              {
                "last_affected": "2.4.7"
              }
            ]
          },
          "events": [
            {
              "introduced": "7783ea7e9dd69a99ddb0221af1935624d1841f51"
            },
            {
              "last_affected": "f27ec497a7fab7a7c3d69fa9462c8369d6f2a98a"
            }
          ],
          "repo": "https://github.com/openidc/mod_auth_openidc",
          "type": "GIT"
        }
      ]
    }
  ],
  "details": "mod_auth_openidc 2.4.0 to 2.4.7 allows a remote attacker to cause a denial-of-service (DoS) condition via unspecified vectors.",
  "id": "CVE-2021-20718",
  "modified": "2026-04-01T23:07:54.695981881Z",
  "published": "2021-05-20T02:15:07.117Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5HJK366TLFEOIYWTHQSZO24MSDPBXHJU/"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FV4KYMQWPS3I2QPW2C253MLIAFGBZPLK/"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.oracle.com/security-alerts/cpujan2022.html"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.zmartzone.eu/"
    },
    {
      "type": "ADVISORY",
      "url": "https://jvn.jp/en/jp/JVN49704918/index.html"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/zmartzone/mod_auth_openidc"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}