Apache Vysper: Authorization bypass

Summary

**UNSUPPORTED WHEN ASSIGNED** Authorization bypass in Apache Vysper, all versions. Apache Vysper is an XMPP (Jabber) server library. Its XEP-0077 (In-Band Registration) implementation is missing an authentication check, allowing any authenticated user to compromise other accounts. As this project is retired, we do not plan to release a version that fixes this issue. Users are recommended to find an alternative.

Remediation

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

References

• Advisoryhttps://lists.apache.org/thread.html/979n9lzg10vc7tdrrlgy4lh5yrsw8wsj
• Referencehttps://mina.apache.org/vysper-project/