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CVE-2026-54384— VitaFit Cloud API Authentication Bypass via POST /front/login/sns/

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.

在 2026 年 10 月 30 日之前的 VitaFit 云端 API 中存在一个身份验证绕过漏洞。远程攻击者可通过向 接口提交与受害者账户关联的 Google 或 Facebook 账户标识符，在无需提供身份提供方（Identity Provider）的所有权证明的情况下，获取该受害者账户的完整会话。攻击者可利用通过账户枚举泄露的标识符伪造登录，进而读取和修改受害者的个人资料，并删除该账户的身份验证记录，导致合法用户无法登录。

CVSS 9.8 · Critical
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I. Basic Information for CVE-2026-54384

Vulnerability Information
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Vulnerability Title
VitaFit Cloud API Authentication Bypass via POST /front/login/sns/
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
使用欺骗进行的认证绕过
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Shenzhen Shine Industrial Co., Ltd. VitaFit 0 ~ 2026-10-30 -

II. Public POCs for CVE-2026-54384

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III. Intelligence Information for CVE-2026-54384

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Other References for CVE-2026-54384 (3)

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

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-2026-54376 8.2 HIGH VitaFit Android < 2.8.1.0 Custom URI Scheme Token Hijacking
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-290