{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-8328",
        "assignerOrgId": "28c92f92-d60d-412d-b760-e73465c3df22",
        "state": "PUBLISHED",
        "assignerShortName": "PSF",
        "dateReserved": "2026-05-11T15:06:00.859Z",
        "datePublished": "2026-05-13T20:14:33.751Z",
        "dateUpdated": "2026-06-30T15:09:29.230Z"
    },
    "containers": {
        "cna": {
            "affected": [
                {
                    "defaultStatus": "unaffected",
                    "modules": [
                        "ftplib"
                    ],
                    "product": "CPython",
                    "repo": "https://github.com/python/cpython",
                    "vendor": "Python Software Foundation",
                    "versions": [
                        {
                            "version": "0",
                            "lessThan": "3.13.14",
                            "status": "affected",
                            "versionType": "python"
                        },
                        {
                            "version": "3.14.0",
                            "lessThan": "3.14.6",
                            "status": "affected",
                            "versionType": "python"
                        },
                        {
                            "version": "3.15.0a1",
                            "lessThan": "3.15.0b2",
                            "status": "affected",
                            "versionType": "python"
                        }
                    ]
                }
            ],
            "credits": [
                {
                    "lang": "en",
                    "type": "reporter",
                    "value": "Qi Deng (https://github.com/ikow)"
                },
                {
                    "lang": "en",
                    "type": "remediation developer",
                    "value": "Bénédikt Tran (https://github.com/picnixz)"
                },
                {
                    "lang": "en",
                    "type": "remediation developer",
                    "value": "Gregory P. Smith (https://github.com/gpshead)"
                }
            ],
            "descriptions": [
                {
                    "lang": "en",
                    "supportingMedia": [
                        {
                            "type": "text/html",
                            "value": "<div>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&nbsp;CVE-2021-4189.</div>"
                        }
                    ],
                    "value": "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."
                }
            ],
            "metrics": [
                {
                    "cvssV4_0": {
                        "Automatable": "NOT_DEFINED",
                        "Recovery": "NOT_DEFINED",
                        "Safety": "NOT_DEFINED",
                        "attackComplexity": "LOW",
                        "attackRequirements": "PRESENT",
                        "attackVector": "NETWORK",
                        "baseScore": 5.9,
                        "baseSeverity": "MEDIUM",
                        "exploitMaturity": "NOT_DEFINED",
                        "privilegesRequired": "NONE",
                        "providerUrgency": "NOT_DEFINED",
                        "subAvailabilityImpact": "NONE",
                        "subConfidentialityImpact": "NONE",
                        "subIntegrityImpact": "NONE",
                        "userInteraction": "ACTIVE",
                        "valueDensity": "NOT_DEFINED",
                        "vectorString": "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",
                        "version": "4.0",
                        "vulnAvailabilityImpact": "NONE",
                        "vulnConfidentialityImpact": "NONE",
                        "vulnIntegrityImpact": "HIGH",
                        "vulnerabilityResponseEffort": "NOT_DEFINED"
                    },
                    "format": "CVSS",
                    "scenarios": [
                        {
                            "lang": "en",
                            "value": "GENERAL"
                        }
                    ]
                }
            ],
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-918",
                            "description": "CWE-918 Server-Side request forgery (SSRF)",
                            "lang": "en",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "28c92f92-d60d-412d-b760-e73465c3df22",
                "shortName": "PSF",
                "dateUpdated": "2026-06-30T15:09:29.230Z"
            },
            "references": [
                {
                    "tags": [
                        "issue-tracking"
                    ],
                    "url": "https://github.com/python/cpython/issues/87451"
                },
                {
                    "tags": [
                        "patch"
                    ],
                    "url": "https://github.com/python/cpython/pull/149648"
                },
                {
                    "tags": [
                        "vendor-advisory"
                    ],
                    "url": "https://mail.python.org/archives/list/security-announce@python.org/thread/ITF2BAPBQEPYK3LDMPRSY435JGNHYNDP/"
                },
                {
                    "tags": [
                        "patch"
                    ],
                    "url": "https://github.com/python/cpython/commit/5dadc64673ce875ebfb24163907777dae0f6ca06"
                },
                {
                    "tags": [
                        "patch"
                    ],
                    "url": "https://github.com/python/cpython/commit/7d95a1dc7382b55cba7fdd6a110336077584a4f0"
                },
                {
                    "tags": [
                        "patch"
                    ],
                    "url": "https://github.com/python/cpython/commit/bb3446dda6c49b32e67c11dbbbf221b40be00763"
                },
                {
                    "tags": [
                        "patch"
                    ],
                    "url": "https://github.com/python/cpython/commit/c88704431ea3248ca769384c13856330976fac1d"
                },
                {
                    "tags": [
                        "patch"
                    ],
                    "url": "https://github.com/python/cpython/commit/eac4fe3b2c77693790a5ef7dfab127c1fee81bf9"
                },
                {
                    "tags": [
                        "patch"
                    ],
                    "url": "https://github.com/python/cpython/commit/2bbcf3fb7a420a05605576c0f9468d4675381b5f"
                },
                {
                    "tags": [
                        "patch"
                    ],
                    "url": "https://github.com/python/cpython/commit/ef12d0dc824baccf737bba1458e5eed3d1e0fceb"
                }
            ],
            "source": {
                "discovery": "UNKNOWN"
            },
            "title": "FTP PASV SSRF, ftpcp() does not use actual peer address, trusts server-supplied PASV host address",
            "x_generator": {
                "engine": "cvelib 1.8.0"
            }
        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-05-14T12:49:18.311219Z",
                                "id": "CVE-2026-8328",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "no"
                                    },
                                    {
                                        "Technical Impact": "partial"
                                    }
                                ],
                                "role": "CISA Coordinator",
                                "version": "2.0.3"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2026-05-14T12:49:39.908Z"
                }
            }
        ]
    }
}