{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-104102",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-10-01T18:05:14.173Z",
        "datePublished": "2026-10-12T18:32:00.821Z",
        "dateUpdated": "2026-10-12T18:32:00.821Z"
    },
    "containers": {
        "cna": {
            "title": "copyparty FTP: upload outside defined volumes (limited path traversal)",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-22",
                            "lang": "en",
                            "description": "CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV4_0": {
                        "attackVector": "NETWORK",
                        "attackComplexity": "LOW",
                        "attackRequirements": "PRESENT",
                        "privilegesRequired": "LOW",
                        "userInteraction": "NONE",
                        "vulnConfidentialityImpact": "NONE",
                        "vulnIntegrityImpact": "LOW",
                        "vulnAvailabilityImpact": "NONE",
                        "subConfidentialityImpact": "HIGH",
                        "subIntegrityImpact": "HIGH",
                        "subAvailabilityImpact": "NONE",
                        "baseScore": 5.3,
                        "baseSeverity": "MEDIUM",
                        "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:L/VA:N/SC:H/SI:H/SA:N",
                        "version": "4.0"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/9001/copyparty/security/advisories/GHSA-phv8-wgjp-g4p9",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/9001/copyparty/security/advisories/GHSA-phv8-wgjp-g4p9"
                },
                {
                    "name": "https://github.com/9001/copyparty/security/advisories/GHSA-phv8-wgjp-g4p9",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/9001/copyparty/security/advisories/GHSA-phv8-wgjp-g4p9"
                },
                {
                    "name": "https://github.com/9001/copyparty/commit/b331bb1c8c8cc306b91e4d94221969335a7a3e86",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/9001/copyparty/commit/b331bb1c8c8cc306b91e4d94221969335a7a3e86"
                },
                {
                    "name": "https://github.com/9001/copyparty/releases/tag/v1.20.19",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/9001/copyparty/releases/tag/v1.20.19"
                }
            ],
            "affected": [
                {
                    "vendor": "9001",
                    "product": "copyparty",
                    "versions": [
                        {
                            "version": "< 1.20.19",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-10-12T18:32:00.821Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "copyparty is a portable file server. Prior to 1.20.19, FTP upload path handling does not confine destinations to configured copyparty volumes. When FTP or FTPS is explicitly enabled, a low-privileged authenticated user can submit traversal paths during upload to create a new file outside configured volumes wherever the copyparty process has write permission. The attacker cannot read or overwrite files, the output name receives a randomized suffix, and copyparty does not execute the file; however, unrelated software on the same host could process the newly created file. This issue is fixed in version 1.20.19."
                }
            ],
            "source": {
                "advisory": "GHSA-phv8-wgjp-g4p9",
                "discovery": "UNKNOWN"
            }
        }
    }
}