{"id":"CVE-2026-54378","aliases":["EUVD-2026-117155","GHSA-jr4h-546g-564w"],"status":"published","title":"VitaFit Cloud API Broken Access Control via S3 Token Endpoint","description":"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.","severity":{"version":"4.0","score":9.3,"vector":"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","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00231,"percentile":0.14038,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-522"],"published":"2026-11-04T22:09:16Z","modified":"2026-11-09T16:56:29Z","products":[{"vendor":"shenzhen shine industrial co., ltd.","product":"vitafit"}],"references":[{"url":"https://github.com/je-lv/vitafit-security-research","tags":["technical-description","exploit"]},{"url":"https://play.google.com/store/apps/details?id=com.vt.vitafit","tags":["product"]},{"url":"https://www.vulncheck.com/advisories/vitafit-cloud-api-broken-access-control-via-s3-token-endpoint","tags":["third-party-advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-54378"},{"url":"https://github.com/advisories/GHSA-jr4h-546g-564w"}],"sources":{"cve":[{"id":"CVE-2026-54378","title":"VitaFit Cloud API Broken Access Control via S3 Token Endpoint","description":"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.","status":"published","published":"2026-11-04T22:09:16.025Z","modified":"2026-11-09T16:56:29.658Z","cvss":[{"version":"4.0","score":9.3,"vector":"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","level":"critical","assessor":"cna"},{"version":"3.1","score":9.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N","level":"critical","assessor":"cna"}],"cwes":["CWE-522"],"updated_at":"2026-11-09T17:34:05.709049Z"}],"euvd":[{"id":"EUVD-2026-117155","description":"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.","status":"published","published":"2026-11-04T22:09:16Z","modified":"2026-11-09T16:56:29Z","cvss":[{"version":"4.0","score":9.3,"vector":"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","level":"critical"}],"updated_at":"2026-11-09T18:17:40.212453Z"}],"ghsa":[{"id":"GHSA-jr4h-546g-564w","title":"VitaFit cloud API before 2026-10-30 contained a broken access control vulnerability that allows...","description":"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.","status":"published","published":"2026-11-05T00:33:06Z","modified":"2026-11-05T00:33:14Z","cvss":[{"version":"3.1","score":9.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N","level":"critical"},{"version":"4.0","score":9.3,"vector":"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"critical"}],"cwes":["CWE-522"],"updated_at":"2026-11-05T00:41:25.219244Z"}],"nvd":[{"id":"CVE-2026-54378","description":"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.","status":"published","published":"2026-11-04T22:18:05.777Z","modified":"2026-11-09T17:17:30.667Z","cvss":[{"version":"4.0","score":9.3,"vector":"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"critical","assessor":"secondary"},{"version":"3.1","score":9.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N","level":"critical","assessor":"secondary"}],"cwes":["CWE-522"],"updated_at":"2026-11-09T20:15:34.048597Z"}]}}