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CVE-2026-54384

VitaFit Cloud API Authentication Bypass via POST /front/login/sns/

VitaFit cloud API before 2026-10-30 contained an authentication bypass vulnerability that allows remote attackers to obtain a full session for a victim's account by submitting a linked Google or Facebook account identifier to the POST /front/login/sns/ endpoint without providing proof of ownership from the identity provider. Attackers can forge a login using an identifier exposed through account enumeration to read and modify the victim's profile and delete the account's authentication record, preventing the legitimate user from logging in.

CVSS 4.0 · 9.3 Critical EPSS < 1% KEV · Not listed
Vendors
Shenzhen Shine Industrial
Products
Vitafit
CVE-2026-54383

VitaFit Cloud API Excessive Data Exposure via relation/search Endpoint

VitaFit cloud API before 2026-10-30 contained an excessive data exposure vulnerability that allows any authenticated user to query the GET /front/relation/search/ endpoint and retrieve PII and health-related profile information for user records. Attackers can enumerate the user directory using overlapping alphanumeric search terms to harvest identifiers, emails, birthdays, gender, height, weight goals, phone numbers, and Firebase UIDs.

CVSS 4.0 · 7.1 High EPSS < 1% KEV · Not listed
Vendors
Shenzhen Shine Industrial
Products
Vitafit
CVE-2026-54382

VitaFit Cloud API AWS IAM Misconfiguration via Cognito S3 Access

VitaFit cloud API before 2026-10-30 contained an improper access control vulnerability in its Cognito-issued AWS role that allows authenticated attackers to perform s3:PutObject operations across the entire shared bucket instead of being restricted to their own folder. Attackers can overwrite other users' objects in the shared S3 bucket using credentials obtained via CVE-2026-54378, destroying original content without triggering deletion protections.

CVSS 4.0 · 6.3 Medium EPSS < 1% KEV · Not listed
Vendors
Shenzhen Shine Industrial
Products
Vitafit
CVE-2026-54381

VitaFit Cloud API Storage Bucket Unauthenticated Access Information Disclosure

VitaFit cloud API before 2026-10-30 contained a misconfigured cloud storage bucket vulnerability that allows unauthenticated attackers to list and download stored files without authentication. Attackers can enumerate the publicly accessible bucket containing 129,947 objects, including 126,881 user-uploaded profile images, to access sensitive personal data without credentials.

CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed
Vendors
Shenzhen Shine Industrial
Products
Vitafit
CVE-2026-54380

VitaFit Cloud API Stored XSS via SVG File Upload

VitaFit cloud API before 2026-10-30 contained a stored cross-site scripting vulnerability that allows authenticated attackers to upload an SVG image containing malicious JavaScript to the shared storage bucket. Attackers can exploit the application's failure to restrict scripts or force downloads for image/svg+xml content, causing the JavaScript to execute when a victim opens the file via direct browser navigation.

CVSS 4.0 · 5.1 Medium EPSS < 1% KEV · Not listed
Vendors
Shenzhen Shine Industrial
Products
Vitafit
CVE-2026-54378

VitaFit Cloud API Broken Access Control via S3 Token Endpoint

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 · 9.3 Critical EPSS < 1% KEV · Not listed
Vendors
Shenzhen Shine Industrial
Products
Vitafit
CVE-2026-54377

VitaFit Cloud API IDOR via profile_id Endpoints

VitaFit cloud API before 2026-10-30 contained an insecure direct object reference vulnerability that allows authenticated attackers to access another user's data by supplying a different user_id or profile_id to endpoints such as GET /front/profile/{profile_id}/report/ and GET /front/profile/{profile_id}/body_index_per_day/. Attackers can leverage predictable user_id and profile_id relationships combined with an account-enumeration weakness to read another account's email address, profile, body-composition report, and measurement history at scale.

CVSS 4.0 · 6.9 Medium EPSS < 1% KEV · Not listed
Vendors
Shenzhen Shine Industrial
Products
Vitafit
CVE-2026-54376

VitaFit Android < 2.8.1.0 Custom URI Scheme Token Hijacking

VitaFit Android application (com.vt.vitafit) before 2.8.1.0 contains an insecure custom URI scheme vulnerability that allows a malicious application to intercept Fitbit login tokens by registering the same callback scheme (vitafit://vtio.cn). Attackers can capture the 30-day Fitbit authorization token with weight scope delivered in the callback URL to read, create, and delete the victim's weight and body-fat records via the Fitbit Body API.

CVSS 4.0 · 8.2 High EPSS < 1% KEV · Not listed
Vendors
Shenzhen Shine Industrial
Products
Vitafit
CVE-2026-54375

VitaFit Android < 2.8.1.0 Long-Lived Session Token Exposure

VitaFit Android application (com.vt.vitafit) before 2.8.1.0 contains an insecure session management vulnerability that allows attackers to extract or intercept unencrypted m_session_id tokens stored in application backups, which remain valid for ten years. Attackers can use a stolen session token to read and modify the victim's account or delete the account's authentication record, preventing the legitimate owner from logging in again.

CVSS 4.0 · 8.6 High EPSS < 1% KEV · Not listed
Vendors
Shenzhen Shine Industrial
Products
Vitafit
CVE-2026-54374

VitaFit Android < 2.8.1.0 Hardcoded Credentials Disclosure

VitaFit Android application (com.vt.vitafit) before 2.8.1.0 contains a hardcoded credentials vulnerability that allows attackers to extract confidential third-party integration secrets by decompiling the APK. Attackers can retrieve embedded WeChat, Tencent QQ, and Fitbit credentials from the decompiled application to abuse the active third-party application registrations.

CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed
Vendors
Shenzhen Shine Industrial
Products
Vitafit
CVE-2026-54373

VitaFit Android < 2.8.1.0 Cleartext Traffic via Missing Network Security Config

VitaFit Android application (com.vt.vitafit) before 2.8.1.0 contains a cleartext traffic vulnerability that allows network-based attackers to intercept or modify unencrypted HTTP communications due to the absence of an Android network security configuration. Attackers on an untrusted network can manipulate support content displayed to the user by tampering with unencrypted HTTP traffic between the app and server.

CVSS 4.0 · 5.1 Medium EPSS < 1% KEV · Not listed
Vendors
Shenzhen Shine Industrial
Products
Vitafit
CVE-2026-54372

VitaFit Android < 2.8.1.0 Insecure TLS Certificate Validation

VitaFit Android application (com.vt.vitafit) before 2.8.1.0 contains an insecure TLS/SSL certificate validation vulnerability that allows network-based attackers to intercept and modify HTTPS traffic by exploiting a custom X509TrustManager that trusts all certificates and a hostname verifier that accepts any hostname. Attackers can perform a man-in-the-middle attack to capture account sessions and health-related API data, and use a captured session to delete the account's authentication record and prevent legitimate login.

CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed
Vendors
Shenzhen Shine Industrial
Products
Vitafit