Homestay3 homestay-backend 0.0.1-SNAPSHOT contains an IDOR in ChatServiceImpl.

Summary

Homestay3 homestay-backend 0.0.1-SNAPSHOT contains an IDOR in ChatServiceImpl. An authenticated user can view conversations, read messages, send messages, and mark messages as read for arbitrary conversation ids because the service does not verify that the caller is a conversation participant.

Remediation

1. Inventory every Unknown product deployment, including staging.
2. No fixed version appears in the public sources yet. Check the references below and the vendor directly.

References

• Referencehttps://github.com/homestay3/homestay-backend
• Referencehttps://github.com/tao0845/CVE-Request/blob/main/CVE-2026-106677.md