{"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":[{"lang":"en","value":"GENERAL"}],"cvssV4_0":{"attackVector":"NETWORK","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"}},{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV3_1":{"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"}}}}