{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-54378",
        "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
        "state": "PUBLISHED",
        "assignerShortName": "VulnCheck",
        "dateReserved": "2026-06-12T20:20:02.949Z",
        "datePublished": "2026-11-04T22:09:16.025Z",
        "dateUpdated": "2026-11-04T22:09:16.025Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
                "shortName": "VulnCheck",
                "dateUpdated": "2026-11-04T22:09:16.025Z"
            },
            "title": "VitaFit Cloud API Broken Access Control via S3 Token Endpoint",
            "descriptions": [
                {
                    "lang": "en",
                    "value": "VitaFit cloud API before 2026-10-30 contained a broken access control vulnerability that allows any authenticated user to obtain temporary AWS credentials by calling the POST /front/user/s3/token/ endpoint. Attackers can use these improperly scoped credentials to list the shared storage bucket and read or overwrite other users' stored files, enabling unauthorized cross-user data access and manipulation."
                }
            ],
            "tags": [
                "exclusively-hosted-service"
            ],
            "datePublic": "2026-11-03T00:00:00.000Z",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "lang": "en",
                            "description": "Insufficiently Protected Credentials",
                            "cweId": "CWE-522",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "affected": [
                {
                    "defaultStatus": "unaffected",
                    "vendor": "Shenzhen Shine Industrial Co., Ltd.",
                    "product": "VitaFit",
                    "versions": [
                        {
                            "status": "affected",
                            "version": "0",
                            "versionType": "date",
                            "lessThan": "2026-10-30"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "format": "CVSS",
                    "scenarios": [
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                            "lang": "en",
                            "value": "GENERAL"
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                    ],
                    "cvssV4_0": {
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                        "attackComplexity": "LOW",
                        "attackRequirements": "NONE",
                        "privilegesRequired": "LOW",
                        "userInteraction": "NONE",
                        "vulnConfidentialityImpact": "HIGH",
                        "subConfidentialityImpact": "HIGH",
                        "vulnIntegrityImpact": "HIGH",
                        "subIntegrityImpact": "HIGH",
                        "vulnAvailabilityImpact": "NONE",
                        "subAvailabilityImpact": "NONE",
                        "exploitMaturity": "NOT_DEFINED",
                        "Safety": "NOT_DEFINED",
                        "Automatable": "NOT_DEFINED",
                        "Recovery": "NOT_DEFINED",
                        "valueDensity": "NOT_DEFINED",
                        "vulnerabilityResponseEffort": "NOT_DEFINED",
                        "providerUrgency": "NOT_DEFINED",
                        "version": "4.0",
                        "baseSeverity": "CRITICAL",
                        "baseScore": 9.3,
                        "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N"
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                        "attackVector": "NETWORK",
                        "attackComplexity": "LOW",
                        "privilegesRequired": "LOW",
                        "userInteraction": "NONE",
                        "scope": "CHANGED",
                        "confidentialityImpact": "HIGH",
                        "integrityImpact": "HIGH",
                        "availabilityImpact": "NONE",
                        "version": "3.1",
                        "baseSeverity": "CRITICAL",
                        "baseScore": 9.6,
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N"
                    }
                }
            ],
            "references": [
                {
                    "url": "https://github.com/je-lv/vitafit-security-research",
                    "name": "Researcher Disclosure",
                    "tags": [
                        "technical-description",
                        "exploit"
                    ]
                },
                {
                    "url": "https://play.google.com/store/apps/details?id=com.vt.vitafit",
                    "name": "Google Play",
                    "tags": [
                        "product"
                    ]
                },
                {
                    "url": "https://www.vulncheck.com/advisories/vitafit-cloud-api-broken-access-control-via-s3-token-endpoint",
                    "name": "VulnCheck Advisory: VitaFit Cloud API Broken Access Control via S3 Token Endpoint",
                    "tags": [
                        "third-party-advisory"
                    ]
                }
            ],
            "credits": [
                {
                    "lang": "en",
                    "value": "Jose Lomeli",
                    "type": "finder"
                }
            ],
            "x_generator": {
                "engine": "vulncheck"
            }
        }
    }
}