CVE-2026-54384

CRITICAL
INFO Priority: 0.06 BB Relevance: 79/100
Published: 2026-11-04 Modified: 2026-11-09 First seen: 2026-11-04 Status: active

Attack Surface

Network Low Complexity No Auth No Interaction Conf. Impact Integ. Impact

CVSS Vector Breakdown

AV: Network
AC: Low
PR: None
UI: None
AT: None
VC: High
VI: High
VA: High

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.

Affected Software (2)

VendorProductVersion
Shenzhen Shine Industrial Co., Ltd. VitaFit 0 < 2026-10-30
Shenzhen Shine Industrial Co., Ltd. VitaFit 0 < 2026-10-30

Bug Bounty Relevance

79 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

9.3 / 10.0 v4.0
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

EPSS — Exploitation Probability

0.66%
Raw Score 0.006610
Percentile 52.2%
Date 2026-11-13

EPSS Trend

2026-11-13
0.00661
2026-11-12
0.00661
2026-11-10
0.00661
2026-11-09
0.00661
2026-11-08
0.00661
2026-11-07
0.00661
2026-11-06
0.00661
2026-11-05
0.00661

Intelligence Sources

mitre ref →
nvd ref →