{"id":"CVE-2026-54378","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-54378","summary":"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/…","details":"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.","published":"2026-11-04T22:18:05.777","modified":"2026-11-04T22:18:05.777","cvss":{"score":9.6,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[],"fix":null,"references":[{"type":"WEB","url":"https://github.com/je-lv/vitafit-security-research"},{"type":"WEB","url":"https://play.google.com/store/apps/details?id=com.vt.vitafit"},{"type":"WEB","url":"https://www.vulncheck.com/advisories/vitafit-cloud-api-broken-access-control-via-s3-token-endpoint"}],"provenance":{"sources":["OSV.dev","NVD","FIRST.org (EPSS)"],"lastVerified":"2026-11-04T22:18:05.777"}}