CVE-2026-54378criticalCWE-522

CVE-2026-54378: critical vulnerability in Shenzhen Shine Industrial Co., Ltd. VitaFit

VitaFit Cloud API Broken Access Control via S3 Token Endpoint

Published

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25Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 9.3
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.
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
Affected products
Shenzhen Shine Industrial Co., Ltd. · VitaFit
Related CVEs — Shenzhen Shine Industrial Co., Ltd. VitaFit

In the same product, most dangerous first.

CVE-2026-54384CRITICALVitaFit Cloud API Authentication Bypass via POST /front/login/sns/EPSS —CVE-2026-54383HIGHVitaFit Cloud API Excessive Data Exposure via relation/search EndpointEPSS —CVE-2026-54382MEDIUMVitaFit Cloud API AWS IAM Misconfiguration via Cognito S3 AccessEPSS —CVE-2026-54381HIGHVitaFit Cloud API Storage Bucket Unauthenticated Access Information DisclosureEPSS —CVE-2026-54380MEDIUMVitaFit Cloud API Stored XSS via SVG File UploadEPSS —CVE-2026-54377MEDIUMVitaFit Cloud API IDOR via profile_id EndpointsEPSS —