CVE-2026-54375 in VitaFit
Summary
by MITRE • 11/04/2026
VitaFit Android application (com.vt.vitafit) before 2.8.1.0 contains an insecure session management vulnerability that allows attackers to extract or intercept unencrypted m_session_id tokens stored in application backups, which remain valid for ten years. Attackers can use a stolen session token to read and modify the victim's account or delete the account's authentication record, preventing the legitimate owner from logging in again.
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Analysis
by VulDB Data Team • 11/04/2026
The VitaFit Android application, specifically versions prior to 2.8.1.0, suffers from a critical insecure session management vulnerability that compromises user data integrity and confidentiality through improper handling of session tokens during backup operations. This flaw stems from the application's failure to encrypt sensitive authentication credentials stored within local backups, allowing any attacker with physical or logical access to the device storage to extract unencrypted m_session_id tokens. These tokens are not only exposed in plaintext but also possess an excessively long validity period of ten years, which significantly expands the window of opportunity for malicious exploitation and negates standard session expiration controls designed to limit exposure time.
From a technical perspective, this vulnerability aligns with CWE-384, Session Fixation, as well as CWE-522, Insufficiently Protected Credentials in Storage or Transmission. The core issue lies in the application's architecture where backup files contain raw session identifiers without any form of cryptographic protection such as AES encryption or secure key derivation functions. In modern Android environments, while full device backups are often restricted by default policies, attackers who have obtained root access, utilize ADB debugging with appropriate permissions, or exploit other local privilege escalation vectors can easily dump these application-specific backup files. The presence of a ten-year validity period for the session token means that even if an attacker gains delayed access to the data, they can still authenticate as the victim long after the initial compromise occurred, effectively bypassing temporal security controls.
The operational impact of this vulnerability is severe and multifaceted. Once an attacker extracts the m_session_id token, they can perform unauthorized read operations on the victim's account, potentially exposing personal health metrics, dietary logs, or other sensitive fitness data that users expect to remain private. More critically, the ability to modify account settings allows for persistent access control manipulation. The most damaging consequence is the capability to delete the authentication record associated with the legitimate user. This action effectively locks out the rightful owner from their own account by invalidating their local login state while maintaining active sessions on the server side tied to the stolen token. This creates a denial-of-service condition for the victim and grants the attacker permanent, unauthenticated-like access to the compromised identity without needing to reset passwords or bypass multi-factor authentication mechanisms that might otherwise protect the account.
This attack vector is consistent with MITRE ATT&CK technique T1530, Data from Local System, specifically involving data staging via backup files, and relates to T1078, Valid Accounts, as it involves the misuse of legitimate credentials obtained through local system access. The scenario also reflects aspects of T1496, Resource Hijacking, where resources are used for malicious purposes such as identity theft or account takeover.
Mitigation strategies must focus on both immediate remediation and long-term architectural improvements. For users currently affected by this vulnerability in versions before 2.8.1.0, the primary recommendation is to update the application immediately if an official patch has been released that addresses these session management flaws. If no such patch exists, users should disable automatic backups for the VitaFit app through Android system settings or use secure backup solutions that encrypt data at rest using strong cryptographic standards like AES-256. Developers must implement server-side token validation and ensure that local storage of sensitive identifiers is either avoided entirely or protected with hardware-backed keystore encryption where possible. Furthermore, session tokens should be bound to specific device fingerprints or IP addresses to prevent reuse across different contexts, and the validity period for such tokens should be drastically reduced to minutes or hours rather than years to limit the impact of any future leakage. Regular security audits focusing on data-at-rest protection standards are essential to ensure compliance with industry best practices for mobile application security.