{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:pyload:pyload:*:*:*:*:*:*:*:*",
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "last_affected": "0.4.20"
              }
            ],
            "source": "CPE_RANGE"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "1f29cd14d4c3d90d3249d20165a21c2b04ffed26"
            }
          ],
          "repo": "https://github.com/pyload/pyload",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-g5j2-gxqh-x7pw"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-639"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/33xxx/CVE-2026-33511.json",
    "unresolved_ranges": [
      {
        "extracted_events": [
          {
            "introduced": "0.4.20"
          },
          {
            "fixed": "0.5.0b3.dev97"
          }
        ],
        "source": "AFFECTED_FIELD"
      },
      {
        "extracted_events": [
          {
            "fixed": "0.5.0b3.dev97"
          }
        ],
        "source": "DESCRIPTION"
      }
    ]
  },
  "details": "pyLoad is a free and open-source download manager written in Python. From version 0.4.20 to before version 0.5.0b3.dev97, the local_check decorator in pyLoad's ClickNLoad feature can be bypassed by any remote attacker through HTTP Host header spoofing. This allows unauthenticated remote users to access localhost-restricted endpoints, enabling them to inject arbitrary downloads, write files to the storage directory, and execute JavaScript code. This issue has been patched in version 0.5.0b3.dev97.",
  "id": "CVE-2026-33511",
  "modified": "2026-07-15T01:48:51.894471289Z",
  "published": "2026-03-24T18:56:08.886Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/33xxx/CVE-2026-33511.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/pyload/pyload/security/advisories/GHSA-g5j2-gxqh-x7pw"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-33511"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:L/SC:N/SI:L/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "pyload-ng: Authentication Bypass via Host Header Injection in ClickNLoad"
}