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CVE-2026-54380— VitaFit Cloud API Stored XSS via SVG File Upload

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.

2026 年 10 月 30 日之前的 VitaFit 云 API 存在存储型跨站脚本（Stored XSS）漏洞。该漏洞允许已认证的攻击者将包含恶意 JavaScript 的 SVG 图像上传至共享存储桶。由于应用程序未能对 类型的内容限制脚本执行或强制触发下载，攻击者可利用此缺陷：当受害者通过浏览器直接导航打开该文件时，其中的 JavaScript 代码将被执行。

CVSS 5.4 · Medium
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I. Basic Information for CVE-2026-54380

Vulnerability Information
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Vulnerability Title
VitaFit Cloud API Stored XSS via SVG File Upload
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
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-2026-54380

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III. Intelligence Information for CVE-2026-54380

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Other References for CVE-2026-54380 (3)

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-2026-54376 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-2026-54373 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-79