{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:koel:koel:*:*:*:*:*:*:*:*",
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "5.1.4"
              }
            ],
            "source": [
              "CPE_RANGE",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6b7cb88e6dfcb5fb9dd833158f30f40dbe618a8f"
            }
          ],
          "repo": "https://github.com/koel/koel",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {},
  "details": "Koel before 5.1.4 lacks login throttling, lacks a password strength policy, and shows whether a failed login attempt had a valid username. This might make brute-force attacks easier.",
  "id": "CVE-2021-33563",
  "modified": "2026-08-07T11:31:05.207051595Z",
  "published": "2021-05-24T23:15:08.820Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/koel/koel/releases/tag/v5.1.4"
    },
    {
      "type": "REPORT",
      "url": "https://huntr.dev/bounties/1-other-koel/koel/"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ]
}