CVE-2026-54381

VitaFit cloud API before 2026-10-30 contained an excessive data exposure vulnerability allowing any authenticated user to query the GET /front/relation/search/ endpoint and retrieve PII and health-related profile information for user records. Attackers can enumerate the user directory using overlapping alphanumeric search terms to harvest identifiers, emails, birthdays, gender, height, weight goals, phone numbers, and Firebase UIDs.

VitaFit cloud API before 2026-10-30 contained an improper access control vulnerability in its Cognito-issued AWS role that allows authenticated attackers to perform s3:PutObject operations across the entire shared bucket instead of being restricted to their own folder. Attackers can overwrite other users' objects in the shared S3 bucket using credentials obtained via CVE-2026-54378.

The VitaFit cloud API before 2026-10-30 contained a stored cross-site scripting vulnerability allowing authenticated attackers to upload an SVG image with malicious JavaScript to the shared storage bucket. The application failed to restrict scripts or force downloads for image/svg+xml content, so the JavaScript executed when a victim opened the file via direct browser navigation.

The VitaFit cloud API before 2026-10-30 contained an insecure direct object reference vulnerability allowing authenticated attackers to access another user's data by supplying a different user_id or profile_id to endpoints such as GET /front/profile/{profile_id}/report/. Predictable identifier relationships and an account-enumeration weakness enabled mass reading of other accounts' email, profile, body-composition report, and measurement history.

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.

VitaFit cloud API before 2026-10-30 contained a broken access control vulnerability that allows any authenticated user to obtain temporary AWS credentials by calling the POST /front/user/s3/token/ endpoint. Attackers can use these improperly scoped credentials to list the shared storage bucket and read or overwrite other users' stored files.