CVE-2026-54384
VitaFit Cloud API Authentication Bypass via POST /front/login/sns/
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.
Fixes and workarounds
No remediation reported in collected sources.
Missing remediation information is not evidence that no patch exists.
Affected products and versions
| Product | Versions | Authority |
|---|---|---|
| VitaFit Shenzhen Shine Industrial Co., Ltd. |
≥ 0; < 2026-10-30 (affected, date)
Other versions: unaffected |
CNA: VulnCheck |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 4.0 / 9.3 critical |
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 | CNA: VulnCheck |
| 3.1 / 9.8 critical |
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | CNA: VulnCheck |
| 4.0 / 9.3 critical |
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X | NVD: [email protected] |
| 3.1 / 9.8 critical |
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | NVD: [email protected] |
Exploit evidence
- https://github.com/je-lv/vitafit-security-research
exploit · CNA: VulnCheck
References
- https://github.com/je-lv/vitafit-security-researchCNA: VulnCheck · technical-description, exploit
- https://play.google.com/store/apps/details?id=com.vt.vitafitCNA: VulnCheck · product
- https://www.vulncheck.com/advisories/vitafit-cloud-api-authentication-bypass-via-post-front-login-snsCNA: VulnCheck · third-party-advisory
- https://github.com/je-lv/vitafit-security-research[email protected]
- https://play.google.com/store/apps/details?id=com.vt.vitafit[email protected]
- https://www.vulncheck.com/advisories/vitafit-cloud-api-authentication-bypass-via-post-front-login-sns[email protected]
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