AniWorld Downloader before 5.3.0 WebUI Login Brute Force via /login

{
  "id": "46dc154cbe9603282aab3b4dfa346dfceecae24c1ee1d9b8fe20c415bf0e9ca4",
  "url": "https://osv.dev/vulnerability/CVE-2026-108580",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "AniWorld Downloader before 5.3.0 WebUI Login Brute Force via /login",
    "summary": "AniWorld Downloader before 5.3.0 contains an improper restriction of authentication attempts vulnerability in the WebUI /login POST handler that allows unauthenticated attackers to guess passwords without throttling. Attackers can enumerate usernames through verify_user response timing and brute-force passwords on exposed WebUI instances to take over accounts.",
    "evidence": "osv:CVE-2026-108580",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-108580",
      "aliases": [
        "CVE-2026-108580"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/phoenixthrush/aniworld-downloader",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "7d088b78bec3bf32a58d6c95b3b710b3f7807834"
                },
                {
                  "fixed": "3c070bd10665377308a3092e11933681c18a5fd1"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "5.3.0"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  },
                  {
                    "range": [
                      {
                        "fixed": "3c070bd10665377308a3092e11933681c18a5fd1"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  },
                  {
                    "range": [
                      {
                        "fixed": "7d088b78bec3bf32a58d6c95b3b710b3f7807834"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "v.5.3.0"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v.5.2.0",
            "v.5.1.1",
            "v.5.1.0",
            "v.5.0.6",
            "v.5.0.5",
            "v.5.0.3",
            "v.5.0.2",
            "v.5.0.1",
            "v.5.0.0",
            "v.4.8.6",
            "v.4.8.5",
            "v.4.8.4",
            "v.4.8.3",
            "v.4.8.2",
            "v.4.8.1",
            "v.4.8.0",
            "v.4.7.0",
            "v.4.6.1",
            "v.4.6.0",
            "v.4.5.1",
            "v.4.5.0",
            "v.4.4.2",
            "v.4.4.1",
            "v.4.4.0",
            "v.4.3.2",
            "v.4.3.1",
            "v.4.3.0",
            "v.4.2.1",
            "v.4.2.0",
            "v.4.1.1",
            "v.4.1.0",
            "v.4.0.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-108580.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:50.455631738Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/108xxx/CVE-2026-108580.json",
        "https://github.com/phoenixthrush/AniWorld-Downloader/releases/tag/v.5.3.0",
        "https://hackmd.io/@haind/aniworld-login-brute-force",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-108580",
        "https://www.vulncheck.com/advisories/aniworld-downloader-before-5.3.0-webui-login-brute-force-via-login",
        "https://github.com/phoenixthrush/AniWorld-Downloader/issues/334",
        "https://github.com/phoenixthrush/AniWorld-Downloader/commit/3c070bd10665377308a3092e11933681c18a5fd1",
        "https://github.com/phoenixthrush/AniWorld-Downloader",
        "https://github.com/phoenixthrush/AniWorld-Downloader/blob/bb13599d17937fdb4df2df699024bc233f0656f2/src/aniworld/web/auth.py#L239-L256"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-307"
        ],
        "cna_assigner": "VulnCheck",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/108xxx/CVE-2026-108580.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-108580",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 519044,
  "published_at": "2026-10-10T15:57:49.256+00:00"
}