Security advisory

{
  "id": "808fbe394fa4ec880f58ae90b11165862d57388cafedde629bfe245858624c2d",
  "url": "https://osv.dev/vulnerability/CVE-2021-21399",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-21399",
    "summary": "Ampache is a web based audio/video streaming application and file manager. Versions prior to 4.4.1 allow unauthenticated access to Ampache using the subsonic API. To successfully make the attack you must use a username that is not part of the site to bypass the auth checks. For more details and workaround guidance see the referenced GitHub security advisory.",
    "evidence": "osv:CVE-2021-21399",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2021-21399",
      "aliases": [
        "CVE-2021-21399",
        "GHSA-p9pm-j95j-5mjf"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/ampache/ampache",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "6751734fa03cf3cb09a0f79e2f06f5499f03436a"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:ampache:ampache:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "4.4.1"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "4.4.0",
            "4.3.0",
            "4.2.6",
            "4.2.5",
            "4.2.4",
            "4.2.3",
            "4.2.2",
            "4.2.1",
            "4.2.0",
            "3.8.9",
            "3.8.0",
            "3.7.0",
            "3.6-alpha6",
            "3.6-alpha5",
            "3.6-alpha4",
            "3.6-alpha3",
            "3.6-alpha2",
            "3.6-alpha1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-21399.json"
          }
        }
      ],
      "modified": "2026-10-20T10:54:28.572246430Z",
      "provider": "osv",
      "references": [
        "https://github.com/ampache/ampache/security/advisories/GHSA-p9pm-j95j-5mjf"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2021-21399",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 385424,
  "published_at": "2021-04-13T20:15:14.843+00:00"
}