Vulnerability details

CVE-2026-54384

Shenzhen Shine Industrial VitaFit

VitaFit Cloud API Authentication Bypass via POST /front/login/sns/

CVSS 4.0

9.3Critical

Official description

VitaFit cloud API before 2026-10-30 contained an authentication bypass vulnerability that allows remote attackers to obtain a full session for a victim's account by submitting a linked Google or Facebook account identifier to the POST /front/login/sns/ endpoint without providing proof of ownership from the identity provider. Attackers can forge a login using an identifier exposed through account enumeration to read and modify the victim's profile and delete the account's authentication record, preventing the legitimate user from logging in.

CVSS scores

Score	Version	Source	Vector
9.3Critical	4.0	CVEProject cvelistV5 (CNA) (VulnCheck)	`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N`
9.8Critical	3.1	CVEProject cvelistV5 (CNA) (VulnCheck)	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`

Affected products

Vendor	Product	Versions	Source
Shenzhen Shine Industrial Co., Ltd.	VitaFit	v < 2026-10-30	CVEProject cvelistV5 (CNA)

References and advisories

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-authentication-bypass-via-post-front-login-sns third-party-advisory

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Details

Published: 2026-11-05
Last updated: 2026-11-09
State: Published
Assigner (CNA): VulnCheck
Kolun priority: 37 · Medium

Exploit prediction (EPSS)

0.66%

Probability of exploitation in 30 days

51.8%

Percentile (among all CVEs)

SSVC assessment (CISA)

Automatable: Yes
Exploitation: Proof of concept
Technical impact: Total

Weaknesses (CWE)

CWE-290
Authentication Bypass by Spoofing