GHSA-5q8v-j673-m5v4: Firefly III user API endpoints expose all users' information to any authenticated user (IDOR)

March 7, 2026

The User management API endpoints (GET /api/v1/users and GET /api/v1/users/{id}) are accessible to any authenticated user without admin/owner role verification, exposing all users’ email addresses, roles, and account status.

References

github.com/advisories/GHSA-5q8v-j673-m5v4
github.com/firefly-iii/firefly-iii
github.com/firefly-iii/firefly-iii/security/advisories/GHSA-5q8v-j673-m5v4

Code Behaviors & Features

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