Answer in brief
CVE-2026-54378 records a Critical severity (CVSS 9.3) vulnerability in VitaFit Cloud API Broken Access Control via S3 Token Endpoint. The current sources do not mark it as known exploited. The current feed maps Shenzhen Shine Industrial Co., Ltd./VitaFit (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 9.3. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Shenzhen Shine Industrial Co., Ltd./VitaFit (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Shenzhen Shine Industrial Co., Ltd./VitaFitgeneric | >=0 <2026-10-30 | 2026-10-30 |
Published upstream
Nov 4, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Nov 4, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Nov 4, 2026
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.
Quoted source text, attributed separately from HOL analysis.