What is CVE-2026-54380?

CVE-2026-54380 is a medium-severity vulnerability in Shenzhen Shine Industrial Co., Ltd. Vitafit, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2026-11-04.

How severe is CVE-2026-54380?

Medium severity. CVSS v3 base score is 5.4 out of 10.

XSS in Shenzhen Shine Industrial Co., Ltd. Vitafit

CVE-2026-54380

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.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2026-11-04 · last modified 2026-11-05.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Shenzhen Shine Industrial Co., Ltd. Vitafit

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

Researcher Disclosure (technical-description, exploit)
Google Play (product)
VulnCheck Advisory: VitaFit Cloud API Stored XSS via SVG File Upload (third-party-advisory)

Frequently asked questions

What is CVE-2026-54380?: CVE-2026-54380 is a medium-severity vulnerability in Shenzhen Shine Industrial Co., Ltd. Vitafit, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2026-11-04.
How severe is CVE-2026-54380?: Medium severity. CVSS v3 base score is 5.4 out of 10.