Vulnerability details
CVE-2026-54378
Shenzhen Shine Industrial VitaFit
VitaFit Cloud API Broken Access Control via S3 Token Endpoint
CVSS 4.0
9.3Critical
Official description
VitaFit cloud API before 2026-10-30 contained a broken access control vulnerability that allows any authenticated user to obtain temporary AWS credentials by calling the POST /front/user/s3/token/ endpoint. Attackers can use these improperly scoped credentials to list the shared storage bucket and read or overwrite other users' stored files, enabling unauthorized cross-user data access and manipulation.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 9.3Critical | 4.0 | CVEProject cvelistV5 (CNA) (VulnCheck) | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N |
| 9.6Critical | 3.1 | CVEProject cvelistV5 (CNA) (VulnCheck) | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| Shenzhen Shine Industrial Co., Ltd. | VitaFit | v < 2026-10-30 | CVEProject cvelistV5 (CNA) |
References and advisories
3- https://github.com/je-lv/vitafit-security-research technical-descriptionexploit
- https://play.google.com/store/apps/details?id=com.vt.vitafit product
- https://www.vulncheck.com/advisories/vitafit-cloud-api-broken-access-control-via-s3-token-endpoint third-party-advisory
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Details
- Published
- 2026-11-05
- Last updated
- 2026-11-09
- State
- Published
- Assigner (CNA)
- VulnCheck
- Kolun priority
- 27 · Low
Exploit prediction (EPSS)
0.23%
Probability of exploitation in 30 days
13.9%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- No
- Exploitation
- Proof of concept
- Technical impact
- Total
Weaknesses (CWE)
- CWE-522Insufficiently Protected Credentials