Auth bypass in Shenzhen Shine Industrial Co., Ltd. Vitafit
CVE-2026-54383
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.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.002 (14.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 14th percentile — 14.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
The 30-day trend appears once there are two daily scores.
Affected products
Weakness classification (CWE)
References
- github.com/je-lv/vitafit-security-research (technical-description, exploit)
- play.google.com/store/apps/details (product)
- www.vulncheck.com/advisories/vitafit-cloud-api-excessive-data-exposure-via-rela… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-54383?
- CVE-2026-54383 is a medium-severity vulnerability in Shenzhen Shine Industrial Co., Ltd. Vitafit, classified under Missing Authorization. CVSS score: 6.5/10. Published 2026-11-04.
- How severe is CVE-2026-54383?
- Medium severity. CVSS v3 base score is 6.5 out of 10.