Bug 2567482 (CVE-2026-54376)

Summary: CVE-2026-54376 VitaFit: VitaFit: Authentication token interception via insecure custom URI scheme
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in the VitaFit application. This vulnerability is caused by an insecurely handled custom Uniform Resource Identifier (URI) scheme used during account authentication. A malicious application installed on the same device can register the same URI scheme to intercept authentication tokens during the login process. An attacker can exploit this flaw to view, create, or delete the user's personal health and fitness records without authorization.
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Description OSIDB Bzimport 2026-11-05 22:01:30 UTC
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.