CVE-2026-54378
VitaFit Cloud API Broken Access Control via S3 Token Endpoint
- Critical 9.6
- A public exploit reference is listed
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.
Key facts
- Published
- 4 Nov 2026
- Last changed
- 9 Nov 2026
- Assigned by
- VulnCheck
- EPSS
- 0.231% likely to be exploited in the next 30 days, higher than 14.008% of CVEs (scores for 15 Nov 2026)
- SSVC (CISA)
- Exploitation: poc; Automatable: no; Technical impact: total
Severity scores
Each score is shown as its source gave it. They are not averaged or merged.
- 9.3CVSS 4.0, Criticalfrom the 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 - 9.6CVSS 3.1, Criticalfrom the CNA (VulnCheck)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
Historical context and remediation
This reference retains the original CVE publication date. A recent record update does not mean a new attack occurred.
No separately sourced impact summary is available on this page yet. Consult the description, version data and dated exploitation evidence.
No explicit remediation statement is available on this page yet. Consult the original record and vendor references before choosing a fix.
Version statuses below come from the CNA. An “unaffected” version is not necessarily a currently supported release or proof of a patch date. EPSS is a dated risk estimate, not a count of historical attacks.
Affected products
| Vendor | Product | Versions |
|---|---|---|
| Shenzhen Shine Industrial Co., Ltd. | VitaFit |
|
Timeline
- 4 Nov 2026 Published