Authentication Bypass in VitaFit Cloud API by VitaFit
CVE-2026-54384

9.3CRITICAL

Key Information:

Vendor

Shenzhen Shine Industrial Co., Ltd.

Status
Vitafit
Vendor
CVE Published:
4 November 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-54384?

The VitaFit cloud API prior to October 30, 2026, has an authentication bypass vulnerability that enables unauthorized attackers to gain full access to a victim's account session. This issue arises when attackers submit a linked Google or Facebook identifier to the /front/login/sns/ endpoint without verifying ownership via the identity provider. Such manipulation allows attackers to log in as the victim, potentially leading to unauthorized profile changes and the deletion of the account's authentication record, effectively locking out the legitimate user.

Affected Version(s)

VitaFit 0 < 2026-10-30

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-54384 - Proof of Concept

References

https://github.com/je-lv/vitafit-security-research
technical-descriptionexploit
https://play.google.com/store/apps/details?id=com.vt.vitafit
product
https://www.vulncheck.com/advisories/vitafit-cloud-api-au...
third-party-advisory

CVSS V4

Score:
9.3
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Jose Lomeli
.