CVE-2026-54378

Received Received - Intake

Broken Access Control in VitaFit Cloud API

Publication date: 2026-11-04

Last updated on: 2026-11-04

Assigner: VulnCheck

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.

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Meta Information

Published

2026-11-04

Last Modified

2026-11-04

Generated

2026-11-05

AI Q&A

2026-11-05

EPSS Evaluated

N/A

NVD

CVE-2026-54378

Affected Vendors & Products

Vendor	Product	Version / Range
Shenzhen Shine Industrial Co., Ltd.	VitaFit	0

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-522	The product transmits or stores authentication credentials, but it uses an insecure method that is susceptible to unauthorized interception and/or retrieval.

Attack-Flow Graph

Executive Summary

This is a broken access control vulnerability in the VitaFit cloud API before 2026-10-30. It allows any authenticated user to obtain temporary AWS credentials by calling a specific endpoint. These credentials are improperly scoped, enabling unauthorized access to other users' stored files in shared storage buckets.

Detection Guidance

Detecting this vulnerability requires checking if the affected API endpoint POST /front/user/s3/token/ is accessible and improperly granting AWS credentials. Monitor logs for unusual access to this endpoint or AWS credential requests. Check for unauthorized file access or modifications in shared storage buckets.

Impact Analysis

If you use the affected VitaFit cloud API, attackers could access your files or overwrite them using the stolen credentials. This could lead to data theft, corruption, or loss of sensitive information stored in the shared bucket.

Compliance Impact

This vulnerability could violate compliance requirements such as GDPR (data protection) and HIPAA (health data privacy) by enabling unauthorized access to personal or sensitive data. Organizations may face legal penalties, reputational damage, and loss of trust due to non-compliance.

Mitigation Strategies

Immediately update VitaFit cloud API to version 2026-10-30 or later to patch the broken access control. Disable the POST /front/user/s3/token/ endpoint if not required. Review and revoke any improperly scoped AWS credentials issued due to this vulnerability. Audit shared storage buckets for unauthorized access or modifications.

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