SparkyFitness before 0.17.0 contains a missing authorization vulnerability that allows authenticated users to delete other users' food variants via the DELETE /api/foods/food-variants/:id endpoint. Attackers can use variant IDs from public food read endpoints to delete serving and nutrition variants of publicly shared foods, destroying victims' data.

SparkyFitness is a self-hosted, AI-powered health and fitness tracker for families. Prior to 1.6.0, SparkyFitnessServer/services/chatService.ts and SparkyFitnessServer/services/labelScanService.ts do not validate destinations supplied in custom AI service settings. An authenticated user saves a custom AI service URL and invokes an affected AI flow. The user can save a custom AI service URL and trigger an outbound request. Successful exploitation can send server-side POST requests with a controlled bearer value, probe internal services, and disclose the AI system prompt. This issue is fixed in version 1.6.0.

SparkyFitness is a self-hosted, AI-powered health and fitness tracker for families. Prior to 1.6.0, the api/admin/backup/restore endpoint interpolates an uploaded filename into a shell command. An authenticated global administrator uploads a restore archive with a crafted filename. The administrator can supply a restore archive with a filename containing shell metacharacters. Successful exploitation can execute arbitrary operating-system commands with the server process privileges. This issue is fixed in version 1.6.0.

SparkyFitness v0.15.8.2 is vulnerable to Cross Site Scripting (XSS) via user input and LLM output.