Threats affecting pkg:maven/Apache Software Foundation/org.apache.vysper:vysper

**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.

CVE-2026-115721 is a high-severity vulnerability in Apache Vysper, an XMPP server library. It involves unbounded resource allocation during XML parsing, which can lead to an out-of-memory condition. This affects all versions of Apache Vysper. The project is retired and no fixes will be released. Users are advised to migrate to alternative solutions.