Vulnerability · Published Nov 4, 2026 · Assigned by VulnCheck

CVE-2026-54382VitaFit Cloud API AWS IAM Misconfiguration via Cognito S3 Access

High 7.7

In plain English

A high-severity security flaw in VitaFit from Shenzhen Shine Industrial Co., Ltd.. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 12% of all known vulnerabilities).

Severity (CVSS 3.1)7.7High

Exploit odds (30 days)0.2%top 88.3% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official description

VitaFit cloud API before 2026-10-30 contained an improper access control vulnerability in its Cognito-issued AWS role that allows authenticated attackers to perform s3:PutObject operations across the entire shared bucket instead of being restricted to their own folder. Attackers can overwrite other users' objects in the shared S3 bucket using credentials obtained via CVE-2026-54378, destroying original content without triggering deletion protections.

Affected products (as reported)

Vendor	Product	Versions
Shenzhen Shine Industrial Co., Ltd.	VitaFit	0 – before 2026-10-30

Weakness: CWE-266 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N

References

Researcher Disclosure technical-description, exploit
Google Play product
VulnCheck Advisory: VitaFit Cloud API AWS IAM Misconfiguration via Cognito S3 Access third-party-advisory