by Kastro
Paper/Archive/CVE-2026-54384

CVE-2026-54384

Shenzhen Shine Industrial Co., Ltd. VitaFit — VitaFit Cloud API Authentication Bypass via POST /front/login/sns/

CVSS 9.8
critical.is priorityof 100
29
CVSS 9.8 (CNA)9.8 / 10 × 3029.4Not in CISA KEV+300.0No EPSS score.000 × 200.0No public exploit+100.0SSVC exploitation: unknown+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
VitaFit< 2026-10-302026-10-30CNA

Scores by source

VulnCheck (CNA)9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
VulnCheck (CNA)9.3CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

References

exploitgithub.com/je-lv/vitafit-security-researchrefplay.google.com/store/apps/details?id=com.vt.vitafitwriteupvulncheck.com/advisories/vitafit-cloud-api-authentication-bypass-via-post-front-login-sns