{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "3.13.14"
              },
              {
                "introduced": "3.14.0"
              },
              {
                "fixed": "3.14.6"
              },
              {
                "introduced": "3.15.0a1"
              },
              {
                "fixed": "3.15.0b2"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "introduced": "ebf955df7a89ed0c7968f79faec1de49f61ed7cb"
            },
            {
              "introduced": "f31a89bb901067dd105b00cfa90523cf7ffdbbdd"
            },
            {
              "fixed": "fd17997c3866d61e0e7bd8201b1d8f35b40a40bd"
            },
            {
              "fixed": "c63aec69bd59c55314c06c23f4c22c03de76fe45"
            },
            {
              "fixed": "94a64bbc6ce89644cf02b82c723d9cc37f6a1870"
            },
            {
              "fixed": "2bbcf3fb7a420a05605576c0f9468d4675381b5f"
            },
            {
              "fixed": "5dadc64673ce875ebfb24163907777dae0f6ca06"
            },
            {
              "fixed": "7d95a1dc7382b55cba7fdd6a110336077584a4f0"
            },
            {
              "fixed": "bb3446dda6c49b32e67c11dbbbf221b40be00763"
            },
            {
              "fixed": "c88704431ea3248ca769384c13856330976fac1d"
            },
            {
              "fixed": "eac4fe3b2c77693790a5ef7dfab127c1fee81bf9"
            },
            {
              "fixed": "ef12d0dc824baccf737bba1458e5eed3d1e0fceb"
            }
          ],
          "repo": "https://github.com/python/cpython",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "PSF",
    "cwe_ids": [
      "CWE-918"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/8xxx/CVE-2026-8328.json"
  },
  "details": "The ftpcp() function in Lib/ftplib.py was not updated when \nCVE-2021-4189 was fixed. While makepasv() was patched to replace \nserver-supplied PASV host addresses with the actual peer address \n(getpeername()[0]), ftpcp() still calls parse227() directly and passes \nthe raw attacker-controllable IP address and port to target.sendport(). This patch is related to CVE-2021-4189.",
  "id": "CVE-2026-8328",
  "modified": "2026-07-15T01:48:53.022591943Z",
  "published": "2026-05-13T20:14:33.751Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/8xxx/CVE-2026-8328.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://mail.python.org/archives/list/security-announce@python.org/thread/ITF2BAPBQEPYK3LDMPRSY435JGNHYNDP/"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-8328"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/python/cpython/issues/87451"
    },
    {
      "type": "FIX",
      "url": "https://github.com/python/cpython/commit/2bbcf3fb7a420a05605576c0f9468d4675381b5f"
    },
    {
      "type": "FIX",
      "url": "https://github.com/python/cpython/commit/5dadc64673ce875ebfb24163907777dae0f6ca06"
    },
    {
      "type": "FIX",
      "url": "https://github.com/python/cpython/commit/7d95a1dc7382b55cba7fdd6a110336077584a4f0"
    },
    {
      "type": "FIX",
      "url": "https://github.com/python/cpython/commit/bb3446dda6c49b32e67c11dbbbf221b40be00763"
    },
    {
      "type": "FIX",
      "url": "https://github.com/python/cpython/commit/c88704431ea3248ca769384c13856330976fac1d"
    },
    {
      "type": "FIX",
      "url": "https://github.com/python/cpython/commit/eac4fe3b2c77693790a5ef7dfab127c1fee81bf9"
    },
    {
      "type": "FIX",
      "url": "https://github.com/python/cpython/commit/ef12d0dc824baccf737bba1458e5eed3d1e0fceb"
    },
    {
      "type": "FIX",
      "url": "https://github.com/python/cpython/pull/149648"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/python/cpython"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "FTP PASV SSRF, ftpcp() does not use actual peer address, trusts server-supplied PASV host address"
}