جزئیات آسیب‌پذیری

**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.

• https://mina.apache.org/vysper-project/
• https://lists.apache.org/thread.html/979n9lzg10vc7tdrrlgy4lh5yrsw8wsj vendor-advisory
• http://www.openwall.com/lists/oss-security/2026/10/23/21