{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-66002",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2026-07-23T18:54:15.833Z",
        "datePublished": "2026-08-20T18:29:40.872Z",
        "dateUpdated": "2026-08-20T18:29:40.872Z"
    },
    "containers": {
        "cna": {
            "title": "Frappe: User Enumeration via PDDR",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-204",
                            "lang": "en",
                            "description": "CWE-204: Observable Response Discrepancy",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV4_0": {
                        "attackVector": "NETWORK",
                        "attackComplexity": "LOW",
                        "attackRequirements": "NONE",
                        "privilegesRequired": "NONE",
                        "userInteraction": "NONE",
                        "vulnConfidentialityImpact": "LOW",
                        "vulnIntegrityImpact": "NONE",
                        "vulnAvailabilityImpact": "NONE",
                        "subConfidentialityImpact": "NONE",
                        "subIntegrityImpact": "NONE",
                        "subAvailabilityImpact": "NONE",
                        "baseScore": 6.9,
                        "baseSeverity": "MEDIUM",
                        "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N",
                        "version": "4.0"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/frappe/frappe/security/advisories/GHSA-c2xv-c53h-qvr5",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/frappe/frappe/security/advisories/GHSA-c2xv-c53h-qvr5"
                },
                {
                    "name": "https://github.com/frappe/frappe/pull/40787",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/frappe/frappe/pull/40787"
                },
                {
                    "name": "https://github.com/frappe/frappe/pull/40814",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/frappe/frappe/pull/40814"
                },
                {
                    "name": "https://github.com/frappe/frappe/pull/40815",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/frappe/frappe/pull/40815"
                },
                {
                    "name": "https://github.com/frappe/frappe/commit/30fe0b4118ff94c95c239dce4bc74ec4ca10a827",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/frappe/frappe/commit/30fe0b4118ff94c95c239dce4bc74ec4ca10a827"
                },
                {
                    "name": "https://github.com/frappe/frappe/commit/47a396ec59f5362029feb349eb2b9d10a21afcf8",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/frappe/frappe/commit/47a396ec59f5362029feb349eb2b9d10a21afcf8"
                },
                {
                    "name": "https://github.com/frappe/frappe/commit/4b32a4e0072e61ce0abcb0d09cfd1f14724fe896",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/frappe/frappe/commit/4b32a4e0072e61ce0abcb0d09cfd1f14724fe896"
                },
                {
                    "name": "https://github.com/frappe/frappe/releases/tag/v15.115.0",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/frappe/frappe/releases/tag/v15.115.0"
                },
                {
                    "name": "https://github.com/frappe/frappe/releases/tag/v16.27.0",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/frappe/frappe/releases/tag/v16.27.0"
                }
            ],
            "affected": [
                {
                    "vendor": "frappe",
                    "product": "frappe",
                    "versions": [
                        {
                            "version": "< 15.115.0",
                            "status": "affected"
                        },
                        {
                            "version": ">= 16.0.0-beta.1, < 16.27.0",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2026-08-20T18:29:40.872Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "Frappe is a full-stack web application framework. Prior to 15.115.0 and 16.27.0, the public request-data web form and PersonalDataDownloadRequest class in frappe/website/doctype/personal_data_download_request/personal_data_download_request.py return distinguishable response shapes for registered and unregistered email addresses, including the user_name field and persistence behavior. A remote attacker can compare the responses to enumerate registered users. This issue is fixed in versions 15.115.0 and 16.27.0."
                }
            ],
            "source": {
                "advisory": "GHSA-c2xv-c53h-qvr5",
                "discovery": "UNKNOWN"
            }
        }
    }
}