{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "0"
                  },
                  {
                    "last_affected": "5.1.1"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "StandardRange"
              },
              {
                "range": [
                  {
                    "fixed": "13f6497afc974f02f1069b760772abe8815d1675"
                  }
                ],
                "source": "REFERENCES_COMMIT"
              }
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "e232ac357cbba22fe69d6d6dfc0d35512a4cd313"
            },
            {
              "fixed": "13f6497afc974f02f1069b760772abe8815d1675"
            }
          ],
          "repo": "https://github.com/jarun/buku",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
      "CWE-918"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/123xxx/CVE-2026-123201.json"
  },
  "details": "Buku (bukuserver) through 5.1.1 contains an unauthenticated server-side request forgery vulnerability that allows remote attackers to make the server request internal hosts by supplying a url parameter to /api/fetch_data or /api/network_handle. Attackers can target loopback, private, or cloud metadata IP addresses, which pass the weak is_bad_url() check and follow redirects, to discover internal services and read their page titles, descriptions, and keywords.",
  "id": "CVE-2026-123201",
  "modified": "2026-11-05T21:16:16.828643617Z",
  "published": "2026-11-05T18:16:37.726Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/123xxx/CVE-2026-123201.json"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/jarun/buku"
    },
    {
      "type": "ARTICLE",
      "url": "https://github.com/jarun/buku/blob/e232ac357cbba22fe69d6d6dfc0d35512a4cd313/buku.py#L4057-L4084"
    },
    {
      "type": "ARTICLE",
      "url": "https://github.com/jarun/buku/blob/e232ac357cbba22fe69d6d6dfc0d35512a4cd313/bukuserver/api.py#L97-L105"
    },
    {
      "type": "FIX",
      "url": "https://github.com/jarun/buku/commit/13f6497afc974f02f1069b760772abe8815d1675"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/jarun/buku/issues/910"
    },
    {
      "type": "FIX",
      "url": "https://github.com/jarun/buku/pull/916"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-123201"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.vulncheck.com/advisories/buku-through-5.1.1-ssrf-via-bukuserver-fetch-data-and-network-handle-api"
    }
  ],
  "schema_version": "1.9.2",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "buku through 5.1.1 SSRF via bukuserver fetch_data and network_handle API"
}