CVE-2026-54376— VitaFit Android < 2.8.1.0 Custom URI Scheme Token Hijacking

Quick assessment

Affected

Shenzhen Shine Industrial Co., Ltd. VitaFit

Exploitation

No confirmed in-the-wild exploitation; assess based on exposure

Recommended action

Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

VitaFit Android 应用程序（com.vt.vitafit）在 2.8.1.0 版本之前存在不安全的自定义 URI 方案漏洞。攻击者可通过注册相同的回调方案（vitafit://vtio.cn），利用恶意应用程序拦截 Fitbit 登录令牌。攻击者能够捕获通过回调 URL 传递的、具有体重（weight）作用域的 30 天 Fitbit 授权令牌，进而通过 Fitbit Body API 读取、创建和删除受害者的体重及体脂记录。

CVSS 8.2 · High Updated Nov 05, 2026

Possible ATT&CK Techniques 2 AI

T1055 · Process Injection T1566 · Phishing

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Vulnerability Information

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Vulnerability Title

VitaFit Android < 2.8.1.0 Custom URI Scheme Token Hijacking

Source: CVE Program / CVE List V5

Vulnerability Description

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.

Source: CVE Program / CVE List V5

CVSS Information

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N

Source: CVE Program / CVE List V5

Vulnerability Type

CWE-926

Source: CVE Program / CVE List V5

Affected Products

Vendor	Product	Affected Versions	CPE	Subscribe
Shenzhen Shine Industrial Co., Ltd.	VitaFit	0 ~ 2.8.1.0	-

II. Public POCs for CVE-2026-54376

#	POC Description	Source Link	Shenlong Link

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No public POC found.

III. Intelligence Information for CVE-2026-54376

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Other References for CVE-2026-54376 (3)

https://play.google.com/store/apps/details?id=com.vt.vitafit product
https://github.com/je-lv/vitafit-security-research technical-description exploit
https://www.vulncheck.com/advisories/vitafit-android-custom-uri-scheme-token-hijacking third-party-advisory

https://www.cve.org/CVERecord?id=CVE-2026-54376

Same Patch Batch · Shenzhen Shine Industrial Co., Ltd. · 2026-11-04 · 12 CVEs total

CVE-2026-54384	9.8 CRITICAL	VitaFit Cloud API Authentication Bypass via POST /front/login/sns/
CVE-2026-54378	9.6 CRITICAL	VitaFit Cloud API Broken Access Control via S3 Token Endpoint
CVE-2026-54372	8.8 HIGH	VitaFit Android < 2.8.1.0 Insecure TLS Certificate Validation
CVE-2026-54375	8.4 HIGH	VitaFit Android < 2.8.1.0 Long-Lived Session Token Exposure
CVE-2026-54382	7.7 HIGH	VitaFit Cloud API AWS IAM Misconfiguration via Cognito S3 Access
CVE-2026-54374	7.5 HIGH	VitaFit Android < 2.8.1.0 Hardcoded Credentials Disclosure
CVE-2026-54381	7.5 HIGH	VitaFit Cloud API Storage Bucket Unauthenticated Access Information Disclosure
CVE-2026-54383	6.5 MEDIUM	VitaFit Cloud API Excessive Data Exposure via relation/search Endpoint
CVE-2026-54377	6.5 MEDIUM	VitaFit Cloud API IDOR via profile_id Endpoints
CVE-2026-54380	5.4 MEDIUM	VitaFit Cloud API Stored XSS via SVG File Upload
CVE-2026-54373	3.5 LOW	VitaFit Android < 2.8.1.0 Cleartext Traffic via Missing Network Security Config

IV. Related Vulnerabilities

Same product: VitaFit

Same vendor: Shenzhen Shine Industrial Co., Ltd.

Same weakness: CWE-926