What’s Vulnerable › Vulnerabilities

CVE-2026-102923: SparkyFitness: SSRF via unvalidated custom_url in AI service settings

• Severity: medium (CVSS 5.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-16 · updated 2026-10-28
• Weakness: CWE-918

Description

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.

Affected products

• CodeWithCJ SparkyFitness: before 1.6.0

References

• https://github.com/CodeWithCJ/SparkyFitness/commit/0b43a37003a3fbedf4e38058130460fd4707fe29
• https://github.com/CodeWithCJ/SparkyFitness/releases/tag/v1.6.0
• https://github.com/CodeWithCJ/SparkyFitness/security/advisories/GHSA-rmxj-43xh-mcm3
• https://github.com/CodeWithCJ/SparkyFitness/security/advisories/GHSA-rmxj-43xh-mcm3

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