Custom URI scheme flaw in VitaFit Android lets apps steal Fitbit tokens
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- Active
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- —
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA.
Summary
VitaFit Android application (com.vt.vitafit) before 2.8.1.0 registers a custom URI scheme that a malicious application can also register, so it can intercept the callback. The flaw is CWE-926, improper export of Android application components. A malicious app installed on the same device can capture a 30-day Fitbit authorization token with weight scope delivered in the callback URL and use it to read, create, and delete the victim's weight and body-fat records through the Fitbit Body API. An exploit link is listed in the references.
Written with Claude Haiku 5.5 from the sources below · 2026-11-06
Description from the CNA
VitaFit Android application (com.vt.vitafit) before 2.8.1.0 contains an insecure custom URI scheme vulnerability that allows a malicious application to intercept Fitbit login tokens by registering the same callback scheme (vitafit://vtio.cn). Attackers can capture the 30-day Fitbit authorization token with weight scope delivered in the callback URL to read, create, and delete the victim's weight and body-fat records via the Fitbit Body API.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Shenzhen Shine Industrial Co., Ltd. | VitaFit | before 2.8.1.0 | 2.8.1.0 | Patch available | CNA |
- VitaFit VendorShenzhen Shine Industrial Co., Ltd. Affected before 2.8.1.0 Fixed in 2.8.1.0 Patch available CNA
Remediation
Update VitaFit Android to 2.8.1.0 or later, which fixes the issue.
Written with Claude Haiku 5.5 from the sources below · 2026-11-06
- Fix · CNA VitaFit (Shenzhen Shine Industrial Co., Ltd.) Fixed in 2.8.1.0
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
Shenzhen Shine Industrial VitaFit 2.8.1.0
5 records Highest priority Priority LOW 5 LOW
Other records, highest priority first
- TI-2026-85234 Hardcoded credentials in VitaFit Android expose third-party secretsPriority LOW 37
- TI-2026-85232 Insecure TLS certificate validation in VitaFit Android appPriority LOW 37
- TI-2026-85235 VitaFit Android Long-Lived Session Token ExposurePriority LOW 36
Vendor assessments
Timeline
- 2026-11-04 Threatist record created from CVE-2026-54376
- 2026-11-05 Alias added: GHSA-c627-j2cf-hvhm
- 2026-11-06 Priority changed: MEDIUM → LOW
- 2026-11-06 Affected versions changed · Red Hat
- 2026-11-06 CVSS score added · Red Hat
References
Exploit 1
Other 1
More Shenzhen Shine Industrial Co., Ltd. vulnerabilities
- TI-2026-85254 Authentication bypass in VitaFit Cloud API login endpoint CVSS 4.0CRITICAL 9.3
- TI-2026-85238 Broken access control in VitaFit cloud API exposes other users' files CVSS 4.0CRITICAL 9.3
- TI-2026-85244 Misconfigured storage bucket in VitaFit Cloud API exposes user files CVSS 4.0HIGH 8.7
- TI-2026-85234 Hardcoded credentials in VitaFit Android expose third-party secrets CVSS 4.0HIGH 8.7
- TI-2026-85232 Insecure TLS certificate validation in VitaFit Android app CVSS 4.0HIGH 8.7
- TI-2026-85235 VitaFit Android Long-Lived Session Token Exposure CVSS 4.0HIGH 8.6
Sources
- CVE-2026-54376 · CVE Program
- CVE-2026-54376 · NVD
- FIRST EPSS
- GHSA-c627-j2cf-hvhm · GitHub Advisory Database · CC BY 4.0
- CVE-2026-54376 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences