{
  "schema_version": "1.4.0",
  "id": "GHSA-2563-fp9c-mgm8",
  "modified": "2025-03-06T20:57:35Z",
  "published": "2023-03-06T21:30:18Z",
  "aliases": [
    "CVE-2021-36394"
  ],
  "summary": "Moodle Session Fixation vulnerability",
  "details": "In Moodle, a remote code execution risk was identified in the Shibboleth authentication plugin.",
  "severity": [
    {
      "type": "CVSS_V3",
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
    }
  ],
  "affected": [
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "moodle/moodle"
      },
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "3.11.0-beta"
            },
            {
              "fixed": "3.11.1"
            }
          ]
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "moodle/moodle"
      },
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "3.10.0-beta"
            },
            {
              "fixed": "3.10.5"
            }
          ]
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "moodle/moodle"
      },
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.9.8"
            }
          ]
        }
      ]
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-36394"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/moodle/moodle"
    },
    {
      "type": "WEB",
      "url": "https://moodle.org/mod/forum/discuss.php?d=424799"
    }
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-384",
      "CWE-94"
    ],
    "severity": "CRITICAL",
    "github_reviewed": true,
    "github_reviewed_at": "2023-03-07T20:59:15Z",
    "nvd_published_at": "2023-03-06T21:15:00Z"
  }
}